What types of valve closure can you produce?
We customize forged steel ball valves, globe valves, check valves and gate valves according to customer drawings, material requirements and usage conditions.
Professional Forged Steel Valve Closures Manufacturer & Supplier in China
Comprehensive technical guide to custom forged steel valve closures from a China manufacturer, covering buyer pain points, material grades, forging control, standards, inspection, project uses and quotation requirements.
High Precision Forged Steel Valve Closures Manufactured by Jiangsu Liangyi
ISO 9001:2015 Certified
EN 10204 3.1/3.2 Certified
API Q1 Ready
NACE MR0175/ISO 15156 Accordance
Quick Answer for Industrial Buyers
If you are sourcing forged steel valve closures for critical industrial valves, this page gives you the short answer first: Jiangsu Liangyi manufactures custom forged ball, globe, check and gate valve closures in carbon steel, alloy steel, stainless steel, duplex and nickel-based alloys, with open die forging, heat treatment, CNC machining, full NDT inspection and EN 10204 3.1/3.2 documentation support.
Product scope
Ball, globe, check and gate valve closures for OEM and project supply.
Main standards
API 6A, ASTM, ASME B16.34, EN 10204 and NACE MR0175/ISO 15156.
Material range
A105, LF2, F11/F22/F91, stainless, duplex, super duplex, Inconel, Monel and Hastelloy.
Quality depth
Controlled forging ratio, ASTM E112 grain size control, UT/MT/PT and full lot traceability.
This summary presents the page's main facts clearly so engineers, procurement teams and technical reviewers can evaluate supplier capability faster.
Table of Contents
- Manufacturer overview
- What are forged steel valve closures?
- Main advantages
- Material grades
- Material selection guide
- Forging ratio and grain size
- Melting methods and forging specifications
- Surface treatment capabilities
- Production and inspection standards
- Production process and quality control
- Global uses and project cases
- Custom solutions and trust commitments
- Buyer FAQ
- Contact for quotation
- Buyer pain points and sourcing risks
- Technical buying checklist
Technical Snapshot
| Product types | Forged steel ball valve closures, globe valve closures, check valve closures and gate valve closures. |
|---|---|
| Main materials | Carbon steel, low-temperature steel, Cr-Mo alloy steel, stainless steel, duplex / super duplex and nickel-based alloys. |
| Manufacturing route | Steel melting, open die forging, heat treatment, NDT, precision CNC machining and final inspection. |
| Accordance | API 6A, ASTM, ASME B16.34, EN 10204, NACE MR0175/ISO 15156, PED and other project-specific standards. |
| QC records | Chemical analysis, mechanical testing, grain size, heat treatment records and UT / MT / PT inspection reports. |
| Main markets | Oil & gas, power generation, marine, petrochemical, mining and heavy industry across multiple global regions. |
Jiangsu Liangyi Co., Limited was established in 1997 and located in Jiangyin City, Jiangsu province, a major forging industrial cluster in China. It is a leading manufacturer of forged steel valve closures fittings. With an 80,000 ㎡ production facility, 2000-6300 ton hydraulic presses and advanced inspection equipment, we have an annual manufacturing capacity of 120,000 tons and have exported high-quality forged steel valve closures to over 50 countries across the Middle East, Asia-Pacific, Europe, North America, South America and Oceania.
We mainly make custom forged steel ball valve closures, forged steel globe valve closures, forged steel check valve closures, and forged steel gate valve closures, fully in accordance with API 6A, ASTM, ASME, EN, DIN, JIS, and NACE MR0175/ISO 15156 international standards. Our products are trusted by top global companies including ARAMCO, ADNOC, Shell, BP, Siemens and GE Power.
What Is a Forged Steel Valve Core?
Forged steel valve cores are main opening and closing parts and sealing parts of industrial valves, responsible for controlling the flow of media, cutting off and regulating pressure under extreme working conditions. Unlike cast alternatives, our forged steel valve closures are manufactured through open die forging, which breaks the coarse as-cast structure, refines grain size, and eliminates internal porosity and shrinkage defects, delivering good mechanical performance and reliability.
Main Advantages of Forged Steel Valve Cores
For high-pressure, high-temperature, corrosive, and critical safety uses, forged steel valve cores are the best choice for global buyers with main benefits including:
- Good Material Density & Mechanical Performance: Higher tensile strength, yield strength, and impact toughness than cast products.
- Uniform Metallographic Structure: Consistent material properties in all directions, avoiding anisotropy and structural weakness common in cast parts.
- Longer Service Life & Higher Reliability: Better fatigue resistance and corrosion resistance, withstanding frequent opening and closing cycles.
- Strict Industry Standards: Fully in accordance with API 6A, ASME B16.34 and NACE MR0175/ISO 15156 standards.
- Full Material Traceability: From raw materials to the final product, each heat number is fully traceable.
Forged vs Cast Valve Closures at a Glance
| Evaluation factor | Forged steel valve closures | Mainly cast alternatives |
|---|---|---|
| Internal structure | Refined grain flow with reduced porosity after forging. | More risk of shrinkage, porosity and as-cast structural discontinuities. |
| Mechanical performance | Higher toughness, fatigue resistance and pressure integrity. | Usually lower consistency under severe cyclic loading. |
| Critical service suitability | Best for high-pressure, high-temperature, sour service and safety-critical duty. | Less preferred where severe service reliability is the priority. |
| Traceability | Designed for heat-number traceability and full QC document. | Varies by supplier and project scope. |
Forged Steel Ball Valve Closure
Forged Steel Globe Valve Closure
Forged Steel Gate Valve Closure
All Types of Material Grades for Forged Steel Valve Cores
We have a wide range of materials for forged steel valve cores,including carbon steel, low-temperature steel, alloy steel, stainless steel, duplex and super duplex steel, and nickel-based super alloys. Thus we can meet the needs of different working conditions and industry standards in different parts of the world.
Carbon & Low-Temperature Alloy Steel
ASTM A105, SA350 LF2, SA350 LF6, ASTM A694 F42/F50/F52/F55/F60/F65/F70, A182 F6a, 1018, 1045, 1050. Ideal for general industrial, water, oil, and medium-pressure steam uses, with full compliance with global pipeline standards.
High-Temperature Cr-Mo Alloy Steel
A182 F11, A182 F12, A182 F22, A182 F91, A182 F92, 4130, 4140, 4330V, 4340, AISI 8620, AISI 8630. Specially designed for high-temperature and high-pressure working conditions in thermal power plants, petrochemical furnaces, and steam systems, widely used in Asia, Middle East, and European power projects.
Stainless, Duplex & Super Duplex Steel
A182 F304, A182 F304L, A182 F316, A182 F316L, A182 F317, A182 F347, A182 F321, A182 F316Ti, AISI 410SS, A182 F6NM; Duplex & Super Duplex: A182 F51, A182 F53, A182 F55, A182 F44, 2205, 2507, UNS S31803, UNS S32750, UNS S32760; Super Austenitic: 904L, 254SMO, 654SMO, UNS S31254. Suitable for corrosive media, seawater desalination, and high-chloride environments, widely used in marine, chemical, and offshore engineering projects in Europe, North America, and Southeast Asia.
Precipitation Hardening & Special Alloys
A286, 17-4PH, 15-5PH, 17-7PH, PH15-7 Mo, XM-19, Nitronic 50, Nitronic 60, Alloy 20, Sanicro 28, UNS N08028, UNS N08367, Al-6XN. Delivering high strength and corrosion resistance for aerospace, defense, and high-end industrial uses.
Nickel-Based Super Alloys
- Inconel: 600, 601, 625, 718, 725, X-750
- Incoloy: 800, 800H, 800HT, 825, 925, 926
- Monel: 400, K500
- Hastelloy: C276, C22, C-4, B-2, B-4, G30, G50
These premium alloys are designed for extreme corrosive, high-temperature, and high-pressure working conditions, widely used in petrochemical processing, offshore oil and gas, and acid production projects in North America, Europe, and the Middle East.
Guide to Choose Material Forged Steel Valve Closures
Choosing the right material for forged steel valve closures is critical to ensure safety, reliability and cost-effectiveness. Our engineering team can give suggestion on material choices based on your specific working conditions:
- General Industrial & Water Uses: ASTM A105 carbon steel (temperature: -29℃ to 425℃, pressure: ≤100 bar)
- Low-Temperature LNG & Cryogenic Uses: SA350 LF2 low-temperature steel (temperature: -46℃ to 345℃, pressure: ≤100 bar; Europe: PED 2014/68/EU, North America: ASME B16.34)
- High-Temperature Power Plant Uses: A182 F91/F92 Cr-Mo alloy steel (temperature: ≤650℃, pressure: ≤300 bar; Asia: GB, Middle East: ARAMCO, Europe: EN)
- Moderate Corrosion Chemical Uses: A182 F304/F316 stainless steel (temperature: -196℃ to 815℃, chloride concentration: ≤500 ppm)
- Seawater & High-Chloride Uses: 2205/2507 duplex steel, 254SMO super austenitic steel (temperature: -50℃ to 315℃, chloride concentration: ≤20,000 ppm; marine classification society standards)
- Sour Oil & Gas (H₂S/CO₂) Uses: NACE MR0175/ISO 15156 Accordance A182 F6NM, duplex steel, and Inconel alloys (H₂S partial pressure: ≥0.0003 MPa, CO₂ partial pressure: ≥0.1 MPa; Middle East: ARAMCO/ADNOC, North America: API 6A)
- Strong Corrosion Extreme Uses: Hastelloy, Inconel, and Monel nickel-based alloys (temperature: ≤1200℃, strong acid/alkali media; North America: ASME, Europe: PED)
Common Buyer Pain Points When Sourcing Forged Steel Valve Closures
Buyers usually do not fail at the specification stage because of one single material name. Most sourcing risk comes from gaps between drawing requirements and actual manufacturing execution. For this reason, reliable procurement of forged steel valve closures depends on traceability, forging quality, machining control, inspection discipline, delivery consistency and documents accuracy.
| Buyer concern | Common sourcing risk | How this page addresses the issue |
|---|---|---|
| Material traceability | Unclear heat number control can create compliance and project approval risk. | The page explains full heat-number traceability, chemical analysis, heat treatment records and EN 10204 3.1 / 3.2 document. |
| Internal forging quality | Porosity, laps or coarse grain structure can shorten service life in critical duty. | The content covers open die forging, minimum forging ratio control, grain size control and full UT / MT / PT inspection. |
| Material suitability for severe service | The wrong grade can fail in high-pressure, high-temperature or sour service conditions. | The material section maps carbon steel, Cr-Mo alloy steel, stainless steel, duplex and nickel alloys to specific service environments, including API 6A forged steel valve closures for sour service. |
| Drawing-based customization | Some suppliers only provide standard parts based on drawings and do not support customizing geometric shapes or processing details. | This page describes the support for customizing the closure of forged steel valves through drawings, from rough forging to fine machining of parts. |
| Documentation for project approval | Missing records delay EPC, owner or third-party approval. | This page lists mechanical test records, particle size reports, non-destructive testing reports, process records and project review document packages. |
| Delivery reliability | Unclear production scope leads to schedule risk for shutdown, retrofit or project milestones. | This page explains the range of production, the options for supply conditions, and the expected delivery time for review of the quote. |
Common Supply Condition, Machining Scope & Document
Beyond material grade choice, buyers usually evaluate forged steel valve closures based on how far the manufacturing scope extends and what quality records are delivered with each batch. To keep your procurement review efficient, the following summary explains the most common supply conditions supported on this page's manufacturing route.
| Supply condition | Rough forged blank, heat-treated forging, rough machined parts, semi-finished parts, or final precision-machined valve closure according to drawing requirements. |
|---|---|
| Heat treatment status | Normalized, tempered, quenched and tempered, or other project-specified treatment routes depending on the material grade and service condition. |
| Machining capability | CNC rough machining, semi-finish machining and final finish machining with size inspection records for critical sealing or fit-up features. |
| Inspection package | Chemical analysis, mechanical testing, hardness, grain size verification, UT / MT / PT, size inspection and visual inspection according to order scope. |
| Document package | EN 10204 3.1 / 3.2 records, heat number traceability, process route records, heat treatment logs and NDT reports when required by the purchase order or project specification. |
| Main buyers | Valve OEMs, EPC contractors, stockists, project procurement teams and engineering departments sourcing critical-service forged parts. |
The Influence of Forging Ratio and Grain Size on Performance
As a professional domestic manufacturer of forged steel valves, we strictly control the forging ratio and grain size of each forged steel valve to ensure the best performance:
- Minimum Hot-Work Reduction Ratio: 6:1 for all standard products; reduction ratios of 4:1 are available subject to client approval based on part size and use requirements. A higher forging ratio breaks the coarse as-cast structure more effectively, refines grain size, and improves material density and mechanical performance.
- Prior-Austenite Grain Size: ASTM grain size number 5 or finer, tested in full accordance with ASTM E112 standards. Forged steel valve closures are better for extreme working conditions because they have a finer grain size, which makes the material tougher, more resistant to fatigue and less likely to creep.
6300 Ton Hydraulic Forging Press
100% NDT Quality Inspection
CNC Precision Machining Center
Custom Melting Methods & Strict Forging Specifications
We offer flexible smelting and forging processes for forged steel valve cores, which can be fully customized according to customer requirements and regional industry standards. Each batch has complete traceability.
Available Melting Methods
- EAF: Electric Arc Furnace (standard for most uses)
- EAF+LF+VD: Electric Arc Furnace + Ladle Refining + Vacuum Degassing (reduces gas and impurity content, improves material purity for high-pressure uses)
- EAF+ESR: Electric Arc Furnace + Electro Slag Remelting (delivers ultra-high purity material with uniform structure for critical safety parts)
- EAF+PESR: Electric Arc Furnace + Protective Atmosphere Electro Slag Remelting
- VIM+PESR: Vacuum Induction Melting + Protective Atmosphere Electro Slag Remelting (for high-end nickel-based alloy and aerospace grade products)
All forged steel valve closures are manufactured using fully-killed melting practice to ensure good material homogeneity and stability.
Strict Forging Technical Standards
- The finished forgings are 100% inspected to be free of cracks, grinding rings, seams and other surface and internal defects.
- After forging, comprehensive heat treatment (normalizing, tempering, and quenching and tempering) is carried out to optimize the mechanical properties of the material. Each batch has complete heat treatment records.
Surface Treatment Capabilities of Forged Steel Valve Closures
To meet our customers' requirements on high-strength, wear-resistant, and corrosion-resistant requirements for harsh industrial and mining uses, we provide a full range of surface treatment services for forged steel valve closures, including:
- ENP (Electroless Nickel Plating)
- Hard Chromium Plating
- Tungsten Carbide Thermal Spraying & Cladding
- Chromium-nickel-iron alloy, Monel alloy and stainless steel coating
- Nitriding & Passivation Treatment
All surface treatments are carried out strictly in accordance with international standards, and each order is provided with a coating thickness and adhesion test report.
Production & Inspection Standards
Our forged steel valve closures are manufactured and tested in full compliance with international industry standards, including but not limited to:
- ASTM A370: Standard Test Methods and Definitions for Mechanical Testing of Steel Products
- ASTM A751: Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
- ASTM E112: Standard Test Methods for Determining Average Grain Size
- ASTM A668: Standard Specification for Carbon and Alloy Steel Forgings for General Industrial Use
- API 6A: Specification for Wellhead and Christmas Tree Equipment
- API 8A/8C: Specification for Drilling and Production Hoisting Equipment
- ASME B16.34: Valves - Flanged, Threaded and Welded Ends
- EN 10204: Metallic Products - Types of Inspection Documents
- NACE MR0175/ISO 15156: Sulfide Stress Cracking Resistant Metallic Materials for Oilfield Equipment
- PED 2014/68/EU: Pressure Equipment Directive for European Market
- JIS B 2201: Steel Valves for General Use
- AS/NZS 1528: Valves for Water Supply
End-to-End Production Process & Comprehensive Quality Control
Our integrated production line from steelmaking to final processing ensures comprehensive quality control and traceability for every forged steel valve closure we produce.
Our complete production process is as follows:
- Raw Material Incoming: Ingot purchase, ingot melting, surface inspection, full chemical element analysis, and qualified material warehouse storage
- Forging Preparation: Custom forging process planning, raw material cutting, and precise pre-heating according to material grade
- Precision Forging Forming: Open die forging with 2000-6300 ton hydraulic presses, with controlled forging ratio to meet standard requirements
- Post-Forging Treatment: Post-forging heat treatment, rough product appearance inspection, and surface rough machining
- Non-Destructive Testing (NDT): Primary ultrasonic testing (UT) to detect internal defects, with unqualified products rejected immediately
- Final Heat Treatment: Quenching and tempering treatment according to material and performance requirements, with test samples retained from the same heat batch
- Performance Verification: Mechanical property testing (tensile, yield, elongation, impact), metallographic testing, and hardness testing, with all results fully documented
- Precision Machining: Secondary rough machining, semi-finish machining, and final CNC machining strictly according to client drawings, with tight dimensional tolerance control
- Final Inspection & NDT: Full size inspection, final UT testing, magnetic particle (MT) testing, and penetrant (PT) testing to ensure zero defects
- Packaging & Delivery: Standard export anti-rust packaging, complete quality documentation sorting, and warehouse storage before shipment
A Complete Set of Quality Control Documents
We send out a full set of EN 10204 3.1/3.2 quality control documents with every order, lot, shipment, and heat number. These include:
- Purchase order details, material grade, heat number, size, weight, and delivery condition
- Full melt practice and forging process records
- Complete chemical composition analysis results
- Full heat treatment procedure records (time, temperature, and cooling rate for each process)
- Full mechanical properties test results, with test sample location, orientation, and test temperature details
- Grain size test results and metallographic reports
- Complete NDT test reports (UT/MT/PT)
Global Industrial uses & Geo-Targeted Project Cases
Our forged steel valve closures are widely used in critical industrial sectors worldwide, with proven project performance in all major global markets, fully Accordance with local industry standards and regulations.
Forged Steel Valve Closures for Middle East Oil & Gas Wellhead Projects
Oil & Gas Wellhead Engineering (the Middle East)
Our forged steel valve closures are used a lot in wellhead projects on land and in sea in Saudi Arabia, the UAE, Kuwait, and Iraq, they meet API 6A, ARAMCO and ADNOC standards. Designed for high-pressure, sour gas (H₂S) environments, our closures are in accordance with NACE MR0175/ISO 15156 and they are paired with tubing heads and casing hangers, with reliable sealing performance and long service life in extreme oilfield conditions. We have supplied more than 50,000 sets of forged valve closures for Middle East oil and gas projects over the past 10 years.
Thermal & Nuclear Power Generation (Asia-Pacific)
We provide precision machined forged steel stop valves for large thermal power plants and nuclear power auxiliary systems in many countries such as China, India, Indonesia and Vietnam. These sealing devices are made of high-temperature resistant ASTM A182 F91/F92 alloy steel, can withstand continuous high-pressure steam circulation, meet the strict safety and performance requirements of the power industry, and fully comply with GB and ASME standards.
Marine & Offshore Engineering (Europe & The World)
Our corrosion-resistant forged steel valve closures are highly trusted by international shipbuilding companies and offshore engineering contractors in Norway, Germany, the United Kingdom and the Netherlands. Made from super austenitic stainless steel, duplex steel, and nickel-based alloys, they offer good resistance to seawater corrosion and harsh marine environments, fully in accordance with PED 2014/68/EU CE marking and marine classification society standards. People all over the world use our products in marine propulsion systems, offshore platforms, and projects to desalinate seawater.
Petrochemical Processing (North America & Europe)
We provide custom alloy forged steel valve closures for petrochemical plants and refineries across the United States, Canada, Germany and France. Using good Hastelloy, Inconel and Monel materials, our closures are engineered to resist strong corrosive chemicals, high temperatures and high pressures in continuous chemical processing operations, with full ASME B16.34 compliance and material traceability. We have long-term cooperation with top petrochemical companies in North America and Europe.
Mining & Heavy Industry (South America & Oceania)
Heavy-duty forged steel gate valve closures from our factory are widely used in Australian mining mill projects and Brazilian/Chilean mineral processing plants.These parts are made of high-strength, wear-resistant alloy steel and can have a tungsten carbide cladding surface treatment added. They are very resistant to impact and abrasion in the tough conditions of mining and mineral processing, and they meet all Australian and international mining industry standards.
Custom Forged Steel Valve Closures Solutions & Trust Commitments
We are a professional China-based forged steel valve closures manufacturer, that can handle all aspects of custom manufacturing, from melting steel to open die forging to final precision machining, all according to client drawings and technical manuals. We can help you find the right solution for your needs, no matter you need the standard series forged steel valve closures or parts that are made to work in very tough conditions.
Trust Commitments
- 100% NDT Inspection: Each forged steel valve closure undergoes full UT/MT/PT testing before shipment.
- Good Lead Times: normal 15-45 days.
- 24 Hours Technical Support: Our engineering team is available all days to provide technical assistance and material choice suggestion.
- Flexible Payment Terms: T/T, L/C and other flexible payment terms are available.
Technical Procurement List for Custom Forged Steel Valve Closures
If you want faster engineering feedback and more accurate prices, please prepare the following technical points before sending the RFQ. This is especially useful when sourcing API 6A forged steel valve closures manufacturer in China solutions, duplex stainless steel forged valve closures, or forged steel valve closures for high-pressure and high-temperature service.
- Valve type and closure type: ball, globe, check or gate valve closure
- Drawing and size tolerance: finished sizes, machining allowance, sealing surface requirements and critical tolerances
- Material grade: A105, LF2, F11, F22, F91, F316, F51, F53, Inconel, Hastelloy or equivalent project-specified grade
- Service condition: medium, design temperature, design pressure, corrosion environment, chloride level and sour service requirement
- Pressure class or project standard: API, ASME, PED, NACE, owner standard or project specification
- Supply condition: rough forged blank, heat-treated forging, rough machined parts or finish machined parts
- Inspection scope: UT, MT, PT, hardness, grain size, mechanical testing, size inspection and third-party witness requirements
- Document package: EN 10204 3.1 / 3.2, material certificates, NDT reports, heat treatment records and packing requirements
- Commercial schedule: quantity, target delivery time, shipping destination and packaging standard
What to Send for a Faster Quotation
To receive a more accurate quotation and engineering response, buyers should send as many of the following details as possible:
- Product drawing or size sketch
- Valve type and closure type required
- Material grade or service environment
- Pressure, temperature and media conditions
- NACE / API / PED / project specification requirements
- Inspection level, document requirements and quantity
- Required delivery time and destination market
Common Questions From Buyers: Forged Steel Valve Closures
This FAQ repeats the most important engineering answers on the page in a concise format, making it easier for the purchasing team, project engineers and purchasing managers to quickly review the page.
What are the common materials?
Some common choices are ASTM A105, SA350 LF2, A182 F11/F22/F91/F92, stainless steels like F304/F316, duplex and super duplex grades, and nickel-based alloys like Inconel, Monel, and Hastelloy.
Are these closures suitable for sour service oil and gas projects?
Yes. The page describes NACE MR0175/ISO 15156 Accordance options for sour oil and gas environments, especially where H₂S and CO₂ service conditions require stricter material control.
What forging ratio and grain size controls are used?
Standard products use a minimum hot-work reduction ratio of 6:1, and prior-austenite grain size is controlled to ASTM grain size number 5 or finer according to ASTM E112.
Can you provide inspection reports and EN 10204 documents?
Yes. We can provide documents include chemical analysis, heat treatment records, mechanical testing, grain size reports and complete UT/MT/PT inspection records, with EN 10204 3.1/3.2 document support stated on the page.
Which surface treatments are available?
Available treatments include ENP, hard chrome plating, tungsten carbide thermal spraying or cladding, Inconel / Monel / stainless overlay cladding and nitriding or passivation treatment.
What should I provide to request a quotation?
Please send your drawing, material grade, order quantity and technical manuals. Pressure, temperature, media and inspection requirements will help the engineering team recommend the most suitable manufacturing route.
Can you supply rough forged blanks and fully machined parts?
Yes. The page already describes an end-to-end route from steel melting and open die forging to heat treatment, NDT and final CNC machining, which means supply scope can be matched to the buyer's drawing and project requirement.
Which industries usually request full traceability?
Full traceability is especially important in oil and gas, power generation, marine, petrochemical and other critical-service industries where heat number control, NDT reports and inspection documents are part of supplier qualification.
Can you manufacture custom forged steel valve closures according to my drawing?
Yes. The page already explains support for custom manufacturing according to client drawings, including steel melting, open die forging, heat treatment, rough machining and final precision machining according to the required supply condition.
Can you support third-party inspection and EN 10204 3.1 / 3.2 document?
Yes. The quality section makes it clear that the inspection records and full document packages are provided. These include chemical analysis, heat treatment records, mechanical tests, particle size reports, and UT/MT/PT reports. If needed, EN 10204 3.1 or 3.2 document support is also available.
How do you choose the right material for sour service, high-pressure or high-temperature uses?
Material choice depends on media, temperature, pressure, corrosion severity and project standards. The page maps low-temperature steel, Cr-Mo alloy steel, stainless steel, duplex steel and nickel-based alloys to different industrial conditions, including sour oil and gas service.
What information has the biggest effect on the quote and lead time?
The most important inputs are how complicated the drawing is, what grade of material it is, how many copies are needed, how deep the machining needs to be, what kind of documentation is needed, and where it needs to be delivered. Clear RFQ data helps speed up the quoting process and makes lead times more accurate.
Contact Us for Custom Quotation
For detailed quotations and custom solutions for forged steel valve closures, please contact our sales team with your detailed drawing, material requirements, order quantity, and technical specifications:
Inquiry Email: sales@jnmtforgedparts.com
Phone/WhatsApp: +86-13585067993
Official Website: https://www.jnmtforgedparts.com
Factory Address: Chengchang Industry Park, Jiangyin City, Jiangsu Province, China