Grade |
Tensile Strength MPa1 |
Yield Strength MPa1 |
Tensile Strength MPa2 |
Yield Strength MPa2 |
1020 |
331 |
193 |
379 |
234 |
1025 |
365 |
207 |
379 |
248 |
1035 |
414 |
228 |
448 |
276 |
1045 |
448 |
241 |
517 |
331 |
4130 |
517 |
379 |
621 |
414 |
4140 |
552 |
414 |
855 |
621 |
1. Annealed 2. Normalized *Also provide NBK heat treatment. |
UNS |
MIL |
SAE |
AFNOR |
DIN |
AMS |
ASTM |
G41300 |
Mil-S-16974 |
J404,J412 |
25CD4 |
1.7218 |
6350 |
A322,A505 |
UNS |
|
BS |
AFNOR |
DIN |
SAE |
ASTM |
G41400 |
|
798A42,708M40,709M40 |
40CD4 |
1.7225 |
J404,J412 |
A322 |
Super-high-pressure steel pipes are key parts in petrochemical industry, such as in pipe reactor, pipes heat exchanger and pipelines of high-pressure polyethylene production unit. The materials used for the manufacture of these pipes are steels G4335V, AISI4340 and AISI4333M. The working pressure of a super-high-pressure steel pipe is 100~350 Mpa; and working temperature 200~350℃. At present, we are capable for supplying a variety of super-high-pressure steel pipes of more than 40mm in I.D. and 10000mm in length,
These super-high-pressure steel pipes are made of ESR steel forging, followed by quenching & tempering and finish machining. Their quality comes up to the advanced level of similar products in world market.
AS 4041 Pressure Piping
AISI 4130 H+T, AISI 4140 H+T, AISI 4145 MOD, AISI 4340, AISI 8630 MOD For Oil & Gas Industry
SAE 4130 H&T, AISI 4140 H&T, SAE 4145 MOD, SAE 4340, SAE 8630 MODIFIED For OIL & GAS
AISI 4140 Quenched & Tempered, AISI 4340 Quenched & Tempered For Oil & Gas Industry
SAE 4140 Quenched & Tempered, SAE 4340 Quenched & Tempered For Oil & Gas Industry
AISI 4145H Modified Quenched & Tempered Steel For Manufacture Drill Collar AISI 4145H MOD
AISI 4145H MOD API 6A PSL3 NACE MR-0175, AISI 4145 Q&T API 6A, PSL3 NACE-MR0175
AISI 4130 Q&T API 6A PSL3 NACE MR-0175, AISI 4130Q&T API 6A, PSL3 NACE-MR0175
AISI 4140 API 6et L80, API 5CT, NACE MR-0175, AISI 4140 Q&T API 6 et L80, API5CT MR-0175
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