Technical reference

Pipe-fitting material cross-reference

Foreign procurement teams commonly specify ASTM/ASME grades; European projects use EN/DIN; Japanese/Korean projects use JIS; Chinese projects use GB. This page consolidates the most-quoted equivalents for fittings, flanges, and pipes.

Quote by material Product catalog

Search ASTM / EN / JIS / GB grade or service

36 matches

Carbon-steel butt-welding fittings

Elbows, tees, reducers, caps for moderate-to-high-temperature service.

ASTM/ASME: A234 / SA234
EN: EN 10253-2 (P235GH/P265GH)
JIS: JIS B2311 / B2312
GB: GB/T 12459 (材质 GB/T 700)

ASTM / ASME	EN / DIN	JIS	GB	Service
WPB	P235GH (1.0345)	STPG370	20	≤ 425°C, general carbon steel	Quote
WPC	P265GH (1.0425)	STPG410	Q345	Higher tensile, ≤ 425°C	Quote

Alloy-steel butt-welding fittings (high temperature)

Cr-Mo creep-resistant alloys for high-temperature steam, refinery, power plant.

ASTM/ASME: A234 / SA234
EN: EN 10253-2 / 10216-2
JIS: JIS G3203 / G3458
GB: GB/T 12459 (材质 GB/T 5310)

ASTM / ASME	EN / DIN	JIS	GB	Service
WP1	16Mo3 (1.5415)	STPA12	15Mo3	≤ 530°C	Quote
WP11	13CrMo4-5 (1.7335)	STPA22	12CrMo / 15CrMo	≤ 580°C	Quote
WP12	11CrMo9-10 (1.7383)	STPA23	12Cr2Mo	≤ 580°C	Quote
WP22	10CrMo9-10 (1.7380)	STPA24	12Cr2Mo / 12Cr2Mo1	≤ 600°C	Quote
WP5	X11CrMo5 (1.7362)	STPA25	1Cr5Mo	≤ 650°C, sulfide	Quote
WP9	X11CrMo9-1 (1.7386)	STPA26	1Cr9Mo	≤ 650°C	Quote
WP91	X10CrMoVNb9-1 (1.4903)	STPA28 / SUS410J3	10Cr9Mo1VNbN	≤ 625°C, supercritical	Quote

Stainless-steel butt-welding fittings

Austenitic 304/316/321/347 corrosion-resistant fittings.

ASTM/ASME: A403 / SA403
EN: EN 10253-4
JIS: JIS B2311 (材质 JIS G3459)
GB: GB/T 12459 (材质 GB/T 14976)

ASTM / ASME	EN / DIN	JIS	GB	Service
WP304 / 304L	X5CrNi18-10 (1.4301) / X2CrNi19-11 (1.4306)	SUS304 / SUS304L	0Cr18Ni9 / 022Cr19Ni10	General corrosion	Quote
WP316 / 316L	X5CrNiMo17-12-2 (1.4401) / X2CrNiMo17-12-2 (1.4404)	SUS316 / SUS316L	0Cr17Ni12Mo2 / 022Cr17Ni12Mo2	Chloride / acid service	Quote
WP321	X6CrNiTi18-10 (1.4541)	SUS321	0Cr18Ni10Ti	≤ 800°C, Ti-stabilized	Quote
WP347	X6CrNiNb18-10 (1.4550)	SUS347	0Cr18Ni11Nb	≤ 850°C, Nb-stabilized	Quote
WP310	X8CrNi25-21 (1.4845)	SUS310S	0Cr25Ni20	High-temp, scaling resistance	Quote
WP-DS (Duplex 2205)	X2CrNiMoN22-5-3 (1.4462)	SUS329J3L	022Cr22Ni5Mo3N	Pitting / chloride	Quote

Low-temperature carbon / alloy fittings

LNG, cryogenic and arctic pipelines.

ASTM/ASME: A420 / SA420
EN: EN 10253-2 (P275NL2 / P355NL1)
JIS: JIS G3204 (SLA-series)
GB: GB/T 12459 (材质 GB 6479 16MnDR)

ASTM / ASME	EN / DIN	JIS	GB	Service
WPL6	P275NL2 (1.1104)	SLA235A	16MnDR	≥ –50°C	Quote
WPL3	P355NL2 (1.1106)	SLA325B	09MnNiDR	≥ –100°C	Quote
WPL9	11MnNi5-3 (1.6212)	SLA460	06MnNiMoDR	≥ –196°C, LNG	Quote

Carbon-steel forged flanges

Forged carbon flanges per ASME B16.5 / B16.47.

ASTM/ASME: A105 / SA105 / A350
EN: EN 10222-2 (P250GH/P280GH)
JIS: JIS G3202 (SF440A/SFVC1)
GB: GB/T 9112 (材质 NB/T 47008 20)

ASTM / ASME	EN / DIN	JIS	GB	Service
A105 / SA105	P250GH (1.0460)	SF440A / SFVC1	20 / 25	General forged carbon	Quote
A350 LF2	P280GH / 11MnNi5-3 (1.6210/1.6212)	SFL2	16MnDR	Low-temp ≥ –46°C	Quote
A350 LF3	11MnNi5-3 (1.6212)	SFL3	09MnNiDR	Low-temp ≥ –100°C	Quote

Alloy-steel forged flanges

Cr-Mo forged flanges for high-temperature/high-pressure piping.

ASTM/ASME: A182 / SA182
EN: EN 10222-2
JIS: JIS G3203 (SFVA)
GB: GB/T 9112 (材质 NB/T 47008)

ASTM / ASME	EN / DIN	JIS	GB	Service
F11 / F11 Cl.2	13CrMo4-5 (1.7335)	SFVA F11A	1.25Cr-0.5Mo	≤ 593°C	Quote
F22	10CrMo9-10 (1.7380)	SFVA F22A	2.25Cr-1Mo	≤ 600°C	Quote
F5	X11CrMo5 (1.7362)	SFVA F5A	5Cr-0.5Mo	Sulfide service	Quote
F91	X10CrMoVNb9-1 (1.4903)	SFVA F91	10Cr9Mo1VNbN	≤ 625°C, ultra-supercritical	Quote

Stainless-steel forged flanges

Austenitic forged flanges per ASME B16.5.

ASTM/ASME: A182 / SA182
EN: EN 1092-1 (材质 EN 10222-5)
JIS: JIS G3214 (SUSF)
GB: GB/T 9112 (材质 GB/T 1220)

ASTM / ASME	EN / DIN	JIS	GB	Service
F304 / F304L	1.4301 / 1.4306	SUSF304 / SUSF304L	0Cr18Ni9	General corrosion	Quote
F316 / F316L	1.4401 / 1.4404	SUSF316 / SUSF316L	0Cr17Ni12Mo2	Chloride service	Quote
F321	1.4541	SUSF321	0Cr18Ni10Ti	≤ 800°C	Quote
F51 (Duplex 2205)	1.4462	SUSF329J3L	022Cr22Ni5Mo3N	Pitting / chloride	Quote

Seamless carbon-steel pipes

Seamless steel pipes for pressure and structural service.

ASTM/ASME: A106 / A53 / API 5L
EN: EN 10216-2
JIS: JIS G3454 / G3456
GB: GB/T 8163 / GB 5310

ASTM / ASME	EN / DIN	JIS	GB	Service
A106 Gr.B	P235GH / P265GH	STPG370 / STPG410	20	Pressure piping	Quote
A53 Gr.B	S195T / S235JRH	STPG370	Q235B	Structural / utility	Quote
API 5L X42-X70	L290-L485	—	L290-L485	Oil & gas linepipe	Quote

Stainless-steel pipes

Seamless / welded austenitic stainless pipes.

ASTM/ASME: A312 / SA312
EN: EN 10216-5
JIS: JIS G3459
GB: GB/T 14976

ASTM / ASME	EN / DIN	JIS	GB	Service
TP304 / TP304L	1.4301 / 1.4306	SUS304TP / SUS304LTP	0Cr18Ni9 / 022Cr19Ni10	General corrosion	Quote
TP316 / TP316L	1.4401 / 1.4404	SUS316TP / SUS316LTP	0Cr17Ni12Mo2 / 022Cr17Ni12Mo2	Chloride service	Quote
TP321	1.4541	SUS321TP	0Cr18Ni10Ti	Stabilized, ≤ 800°C	Quote
TP347H	1.4912	SUS347HTP	0Cr19Ni10NbN	≤ 850°C, creep	Quote

Manufacturing Range

What we actually manufacture in-house

Standards listed above are the codes we work to. Below is the dimensional and capacity envelope we can deliver from our own shop floor.

Buttweld fittings DN range

DN 15 — DN 1500

ASME B16.9 / EN 10253 / MSS SP-75

Max flange OD

5 m

Forged + machined; ASME B16.47 Series A/B + EN 1092-1

Max forging tonnage

50 t

Custom forgings, blocks, large-OD blanks

Pressure class coverage

PN 6 — PN 400 / Class 150 — 2500

Class 150 / 300 / 600 / 900 / 1500 / 2500 (ASME B16.5 / B16.47); PN 6 - PN 400 (EN 1092-1)

Disclaimer

This cross-reference is compiled from publicly available standards and is for technical reference only. Final material specification must follow the contract technical schedule, applicable mandatory standards (PED, ASME, CE, etc.), and review by qualified materials engineers.