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
