ISO 9001 · ASME B16.5 · EN 1092-1 · since 2005
ASME B16.5 flanges
& forged components
Manufacturer and exporter of weld neck, slip-on, blind and socket weld flanges, plus open-die and closed-die forgings. Class 150 to 2500, 1/2″ to 60″, in carbon, stainless, alloy and duplex steel.
- Years in export
- 20+ Years in export
- Countries served
- 40+ Countries served
- Pressure classes
- 150–2500 Pressure classes
- EN 10204 MTC
- 3.1 EN 10204 MTC
Products
Nine product families, one supply chain. Standard sizes ship from stock; non-standard and alloy items are machined to order.
Weld Neck Flanges
ASME B16.5 · A105 · Class 150–2500
Slip-On Flanges
A105 / 304 / 316L · Class 150–2500
Blind Flanges
Line isolation · RF / FF / RTJ
Socket Weld Flanges
Small bore · high pressure
Forged Shafts
Open die · up to 20 t
Rolled Rings
Seamless · OD to 4000 mm
Forged Gears
Closed die · heat treated
Custom Flanges
Machined to your drawing
Shop by size and class
Each page carries the full ASME B16.5 dimensional record, bolt data and approximate weight for that size and pressure class.
Why buyers choose us
Procurement teams care about three things: the part fits, the paperwork is right, and the shipment arrives when promised. Our process is built around those three.
Quality system and certificates →Standards-based engineering
Dimensions, tolerances and markings follow ASME B16.5, EN 1092-1, DIN and JIS. Every shipment includes a dimensioned inspection record.
Material traceability
Heat number stamped on the part, EN 10204 3.1 certificate and PMI report on stainless and alloy heats.
Third-party inspection welcome
SGS, BV, TÜV and customer-appointed inspectors can witness testing before packing at no extra charge.
Export documentation
Packing list, commercial invoice, certificate of origin, MTC and fumigation certificate prepared for customs clearance.
Standards we manufacture to
Flange dimensions are interchangeable within a standard family; the table below shows the ranges we produce most often. Mixed-standard orders (for example ASME flanges with EN gaskets) are reviewed before quoting.
| Standard | Sizes | Pressure class | Typical materials |
|---|---|---|---|
| ASME B16.5 | 1/2″ – 24″ | 150 – 2500 | A105, A350 LF2, F304/F316, F11/F22 |
| ASME B16.47 A/B | 26″ – 60″ | 150 – 900 | A105, A350 LF2, F304/F316 |
| EN 1092-1 | DN10 – DN600 | PN6 – PN40 | P250GH, 1.4301, 1.4404, F11/F22 |
| DIN 2632 / 2633 | DN15 – DN600 | PN6 – PN40 | RSt37.2, C22.8, 304/316 |
| JIS B2220 | 10A – 600A | 5K – 30K | SS400, SUS304, SUS316 |
Full dimension tables for every standard — including every size, pressure rating and bolt pattern we machine. Need a standard not listed? Send the specification and we will confirm feasibility.
Manufacturing capability
Forging, heat treatment, machining and testing are controlled in-house, which keeps lead times short and makes it possible to hold tolerances on large and non-standard parts.
10,000 m²
Workshop area
100
Skilled workers
15,000 t
Annual capacity
40+
Export countries
Technical guides
- ASME B16.5 vs DIN vs EN vs JIS
How the four main flange standards differ, and how to convert a PN rating to a class.
- Material selection for flanges
A105, A350 LF2, 316L, F11/F22 and duplex — matching the grade to temperature and corrosion.
- Sourcing flanges from China
Certificates, inspection, packing and Incoterms for first-time importers.
Get a quotation
Send us your flange or forging list
Include standard, size, class, material and quantity. Drawings, material certificates and third-party inspection requirements can be attached in the message — we reply within one business day.
- ★ No minimum order for standard sizes
- ★ FOB, CIF and DDP terms
- ★ MTC 3.1, packing list and certificate of origin included
Request a quotation
Send drawings, dimensions or a standard reference. Our sales engineers reply within 24 hours on business days.