Material is verified on arrival, the process is controlled in the workshop, and the finished part is inspected against the purchase order before it is packed.
No batch moves to the next operation until the previous one is signed off.
Heat number, mill certificate, chemistry and dimensions are checked against the purchase order. OES re-verification on every alloy heat; material is quarantined until released.
Forging ratio, forging temperature and heat-treatment cycle are recorded per batch. Machining follows a drawing-specific route card with in-process gauging.
Dimensions, surface, marking and face finish are inspected to the specification. PMI, hardness and, where required, impact testing are performed on the finished part.
EN 10204 3.1 certificate, dimensional report, PMI report, heat-number map and packing list are compiled and checked before despatch.
Chemistry, mechanical properties and soundness are measured on site, so a deviation is caught in Shanghai rather than at your receiving inspection.
Grade verification and residual-element screening on every heat.
Carbon and sulphur content for stainless and nickel alloys.
Tensile strength, yield strength and elongation to ASTM A370 / ISO 6892.
Charpy V-notch testing, including low-temperature service.
Brinell and Rockwell verification of heat treatment.
Internal soundness of forgings and bar to GB/T 6402 or ASTM A388.
| Scope | Standards |
|---|---|
| Flanges | ASME B16.5, ASME B16.47, HG/T 20592-2009, HG/T 20615-2009, EN 1092-1, JIS B2220, GB/T 9112~9124 |
| Butt-weld fittings | ASME B16.9, ASME B16.28, GB/T 12459-2017, GB/T 13401-2017, SH/T 3408, DIN 2605 / 2615 / 2616 / 2617 |
| Forged fittings | ASME B16.11, MSS SP-97, GB/T 14383, SH/T 3410, JIS B2316 |
| Material | ASTM A182/A182M, A105, A350, A694, B564, B381, B462, B472; EN 10222-5; GB/T 12228 |
| Testing | ASTM A370, A388, E165, E709; GB/T 6402; NACE MR0175 / ISO 15156 |
Production licence and type-test certificates for pressure piping components, issued in China and valid to 2030. Copies are sent with the quotation on request.
Pressure piping components — forged steel flanges and forged fittings. Issued by the Shanghai Municipal Administration for Market Regulation, valid to 07 Jun 2030.
Weld neck flange WN100 B-40 RF S=3.6 in S22053 duplex stainless, tested to TSG D7002-2023. Valid to 06 Aug 2030.
Socket weld tee SF2205 3000 DN65 SW-T, covering stainless steel (material group V) and duplex stainless (group VI), forging grades I–IV. Valid to 29 Jul 2030.
Steel pipe, valves, pipe elbows, metal pipe connectors, flanges and metal sleeves. Registered to 06 Aug 2030.
Quotes within one business day. Send grade, size, pressure class, face type and quantity — a drawing works better than a description.
