WN 01
Weld Neck Flanges
- Standards
- ASME B16.5, ASME B16.47, ANSI
- Size range
- NPS 1/2–24 (B16.5); NPS 26–60 (B16.47)
- Pressure
- Class 150, Class 300, Class 600
- Materials
- ASTM A105, A350 LF2
Forged flange manufacturer
Forged industrial flanges
Forged flanges for industrial procurement teams
H1 Flange manufactures and supplies forged flanges for oil and gas, petrochemical, power, water, and mining buyers who need standards, materials, and a direct quote path.
- Standards
- ASME B16.5, ASME B16.47, ANSI, DIN
- Materials
- ASTM A105, A182 F304/F316, A350 LF2
- Contact
- sales@h1flange.com
Product range
Forged flange types for industrial procurement
Weld neck, slip-on, blind, socket weld, threaded, lap joint, and drawing-based custom flanges. Each type has standards, size, class, and a quote path.
WN 
SO 02
Slip-On Flanges
- Standards
- ASME B16.5, ANSI, DIN
- Size range
- NPS 1/2–24; DN 15–600
- Pressure
- Class 150, Class 300, PN10
- Materials
- ASTM A105, A182 F304/F316
BL 03
Blind Flanges
- Standards
- ASME B16.5, ASME B16.47, DIN
- Size range
- NPS 1/2–24 (B16.5); larger on request
- Pressure
- Class 150, Class 300, Class 600
- Materials
- ASTM A105, A350 LF2
SW 04
Socket Weld Flanges
- Standards
- ASME B16.5, ANSI
- Size range
- NPS 1/2–4
- Pressure
- Class 150, Class 300, Class 600
- Materials
- ASTM A105, A182 F304/F316
THD 05
Threaded Flanges
- Standards
- ASME B16.5, ANSI
- Size range
- NPS 1/2–4, larger on request
- Pressure
- Class 150, Class 300
- Materials
- ASTM A105, A182 F304/F316
LJ 06
Lap Joint Flanges
- Standards
- ASME B16.5, ANSI
- Size range
- NPS 1/2–24
- Pressure
- Class 150, Class 300
- Materials
- ASTM A105, A182 F304/F316
CF 07
Custom Forged Flanges
- Standards
- ASME B16.5, ASME B16.47, DIN
- Size range
- Per drawing
- Pressure
- Per specification
- Materials
- ASTM A105, A350 LF2
Manufacturer
Forged flanges from Shanxi Hengyi Flange Co., Ltd.
H1 Flange · 山西衡一法兰有限公司
H1 Flange manufactures and supplies forged flanges for oil and gas, petrochemical, power, water, and mining buyers. The company page covers process, inspection, and export markets without unverified claims.
- Product families
- 7 forged flange types
- Standards coverage
- ASME, ANSI, DIN, EN, JIS, GB/T
- Process scope
- Forge to export packing
- Market pages
- China, North America, DACH, GCC, South America
Standards and materials
Match the flange to the specification you already buy
Procurement teams specify by standard, pressure class, and grade. The lists below follow the selected market.
Standards
ASME, ANSI, DIN, EN, JIS, GB/T, and related project specs by region.
ASME B16.5ASME B16.47ANSIDINEN 1092-1JIS
Materials
Carbon steel, stainless, low-temperature, and alloy grades.
ASTM A105A182 F304/F316A350 LF2Alloy steel
Markets
Supply the standards each market actually buys
China, North America, DACH, GCC, and South America keep their own specifications.
Global
Global export, Traders, Engineering contractors
ASME B16.5ASME B16.47ANSIDINEN 1092-1JIS
China
China, Greater China, Export desk
GB/T 9119GB/T 9115HG/T 20592ASME B16.5DIN
North America
United States, Canada
ASME B16.5ASME B16.47ANSI Class 150-2500MSS SP-44
DACH
Germany, Austria, Switzerland
DINEN 1092-1PN10-PN100PED support
GCC
Saudi Arabia, United Arab Emirates, Wider GCC
ASME B16.5ASME B16.47API project specsDIN on request
South America
Brazil, Argentina, Chile, Peru, Colombia
ASTM A105ASME B16.5DIN/PNAWWAANSI Class 150-600
Industries
Forged flanges for the plants that specify them
Oil and gas, petrochemical, power, water, and mining buyers can confirm the application before they open the RFQ.
Oil and gas
Pressure piping, wellhead, and process systems specified to ASME, ANSI, and project lists.
Petrochemical
Process-unit flanges in carbon, stainless, and alloy grades for corrosive service.
Power
Steam, cooling-water, and balance-of-plant piping in carbon and alloy steels.
Water
Treatment plants, transmission lines, and utility piping, including AWWA and PN systems.
Mining
Slurry, process-water, and maintenance piping for high-wear industrial service.
Manufacturing and inspection
Process and inspection the RFQ can name
Forging through packing, with dimensional inspection, PMI, UT, MT, hardness, and material traceability available on the order.
Manufacturing capability
Forging, heat treatment, machining, drilling, marking, and export packing.
Inspection and traceability
Dimensional inspection, PMI, UT, MT, hardness testing, and material traceability.
Download-ready proof
Catalogs, certificates, material grade sheets, packing guides, and sample reports — request through Downloads
Datasheets
Request catalogs, certificates, and packing files
PDFs are not published on this page yet. Email sales@h1flange.com and name the file you need.
Product catalog
Flange types, size ranges, and pressure classes in one PDF.
Request this fileFlange dimensions
Dimensional tables for ASME, DIN, EN, and related standards.
Request this fileMaterial grade sheet
Carbon, stainless, low-temperature, and alloy grade coverage.
Request this fileQuality control checklist
Dimensional inspection, PMI, UT, MT, and hardness coverage.
Request this filePacking and shipping guide
Export packing, marking, and document set used with shipments.
Request this fileEmail sales
Send the specification to sales@h1flange.com
Name the flange type, standard, size, pressure class, and material. Attach drawings to the email.
Direct contact
Email sales@h1flange.com.
Include in the email
- Flange type
- Standard, size, and pressure class
- Material and facing
- Quantity and destination
- Drawing, if you have one