Sichuan Liaofu Special Steel Trading Co., Ltd which was established in 2005 who focus on hot rolled seamless steel tube.diameter from 20 to 400mm thickness from 3 to 40mm.
The steel pipe materials we can produce:
carbon steel astm 1010 1020 1045 1035
alloy steel astm 4130 4140 4145H 4340 andDIN 20MNV6,
alloy steel in china grade 27simn,20mn2,30mn2,38crmoal,30crmnsia,20crmnti
4145H alloy steel bar 4145H structure steel
AISI 4145H Steel Chromium-Molybdenum H-Steel
4145H a low alloy chromium molybdenum steel that is similar to 4140, and it has a different chemical composition, which contributes to its higher hardenability at greater diameters. The oil and gas industries frequently employ the chromium molybdenum alloy steel grade known as AlSI 4145H
Applications
AISI 4145H is a low alloy steel suitable for downhole drilling tools such as subs, x-overs, drill collars, pup-joints and fishing tools. General engineering applications include components exposed to heavy strain, such as shafts, gear, bolts etc. AISI 4145H can also be used in hardened condition as machine parts exposed to heavy wear.
chemical component
C 0.4200 0.4900
Si 0.1500 0.3500
Mn 0.6500 1.1000
P 0.0350
S 0.0400
Cr 0.7500 1.2000
Mo 0.1500 0.2500
AISI 4145H is a hardenable alloy structural steel, which is equivalent to 45CrMnMo steel or 40CrMo steel in Chinese standards. AISI 4145 is a chromium molybdenum low alloy steel grade widely used in the oil and gas sectors but with a higher carbon content compared with AISI 4140. Larger diameters AISI 4145 bars are often supplied with higher Molybdenum level, 0.35% max.
some pictures of 4145h 414020mnv6 from our factory.
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