ASTM 4140 42CrMo4 42CrMo 4130 32crmo4 35CrMo Cold Rolled High Alloy Precision Seamless Steel Tube Pipe Product

Product Description

Product Description

Precision seamless steel pipe, precision hydraulic seamless steel pipe, cold-drawn precision seamless steel pipe, cold-rolled precision seamless steel pipe, high-precision seamless steel pipe, precision bright seamless steel pipe.
(1) Main varieties of steel pipes: DIN series high-precision precision bright seamless steel pipes, special steel pipes for hydraulic system, and special steel pipes for automobile manufacturing.
(2) Main standards: DIN2391, DIN2445, EN10305, DIN1629, DIN1630, ASTM A179
(3) Main material: ST35 (E235) ST37.4 ST45 (E255) ST52 (E355)
(4) Main delivery status: NBK (+N) GBK (+A) BK (+C) BKW (+LC) BKS (+SR)
(5) Main features: the inner and outer walls of the steel pipe have no oxide layer, no leakage under high pressure, high precision, high finish, no deformation during cold bending, no crack during flaring and flattening.
(6) Main applications: used in hydraulic system piping, automobile manufacturing piping, military industry, engineering machinery, railway locomotive, aerospace, ship, injection molding machine, die-casting machine, machine tool, diesel engine, petrochemical industry, power station, boiler equipment and other industries.

Chemical Composition (%)

Material	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
ASTM 4119 GB 12CrMo	0.08-0.15	0.17-0.37	0.4-0.7	0.035	0.035	0.4-0.7	0.3	0.3	0.4-0.55
JIS SCM415 GB15CrMo	0.12-0.18	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.4-0.55
ASTM 4118 GB 20CrMo	0.17-0.24	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4130 GB 30CrMo	0.26-0.34	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4135 GB 35CrMo	0.32-0.4	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4140  GB  42CrMo	0.38-0.45	0.17-0.37	0.5-0.8	0.035	0.035	0.9-1.2	0.3	0.3	0.15-0.25
ASTM 4142  GB 42CrMnMo	0.4-0.45	0.15-0.35	0.78-1	0.035	0.04	0.8-1.1	0.25	0.35	0.15-0.25

Mechanical property

Material	Diameter of sample d mm	Heat treatment or condition.	Tensile strength σb Mpa	Point of yield σs Mpa	Ratio of elongation δ %	Reduction of section ψ %	hardness HBW	Shock absorption energy KV2 J
ASTM 4119 GB 12CrMo	d=30	Quenching + tempering	≥410	≥265	≥24	≥60	≤179	≥110
JIS SCM415 GB 15CrMo	d=30	Quenching + tempering	≥440	≥295	≥22	≥60	≤179	≥94
ASTM 4118 GB 20CrMo	d=15	Quenching + tempering	≥885	≥685	≥12	≥50	≤197	≥78
ASTM 4130 GB 30CrMo	d=25	Quenching + tempering	≥930	≥785	≥12	≥50	≤229	≥63
ASTM 4135 GB 35CrMo	d=25	Quenching + tempering	≥980	≥835	≥12	≥45	≤229	≥63
ASTM 4140     GB  42CrMo	d=25	Quenching + tempering	≥1080	≥930	≥12	≥45	≤217	≥63

Import and export steel pipes

Generally, the import volume of seamless pipe is large. The main importing countries are Germany and Japan. European countries such as Romania, Russia, Switzerland, France, Spain, the Czech Republic, Yugoslavia, Hungary and other countries have imported. There are also a small amount of imports from Argentina, Mexico and other countries in South America.
According to the different requirements of the consumer in China, there are more than 100 types of imported seamless pipes, including 15922mm, 1595mm and 15918mm. 114.38mm,114.310mm,114.313mm. The length is generally 5-8m or 4-7m. Mainly hot-rolled carbon structure and ST65. The minimum diameter of the inlet specification is 305 mm, and the maximum diameter is 47813 mm.
A small number of seamless pipes with small diameter and thin wall have been imported from France and Spain, such as 183mm, 223mm, 26.93mm, etc. Implement the general rules of Mannesmann Steel Pipe Plant in Germany.
Seamless pipes imported from Hungary and Japan often refer to DIN2448 and DIN1629.

product application

Seamless pipes are widely used. Seamless pipes for general purposes are rolled by ordinary carbon structural steel, low alloy structural steel or alloy structural steel, with the largest output, and are mainly used as pipes or structural parts for conveying fluid.
Supply is divided into three types according to different purposes: a. Supply according to chemical composition and mechanical properties; B. Supply according to mechanical properties; C. Supply according to hydraulic test. The steel pipes supplied according to category a and b shall also be subjected to hydraulic test if they are used to bear liquid pressure.
There are many kinds of seamless pipes for special purposes, such as boiler seamless pipes, geological seamless pipes and petroleum seamless pipes.

FAQ

Q1:who are we?

A:We are based in Shandong, China, start from 2022,sell to North America(60.00%),Western Europe(14.00%),South America(6.00%).
There are total about 11-50 people in our office.

Q2. how can we guarantee quality?
A:Always a pre-production sample before mass production;
Always final Inspection before shipment;

Q3.what can you buy from us?Which ports are accepted for delivery?
A:Copper,Aluminum,Mould steel, Seamless carbon steel,Precision steel pipe,The steel plate,Alloy steel,Titanium,Custom machine parts.It can be delivered from Qingdao, Tianjin, Shanghai, Guangzhou and other ports.

Q4.why should you buy from us not from other suppliers?
A:Shandong Meide Import and Export Co., Ltd. has 25 years of production experience. With advanced precision production equipment
and modern large warehouses, has a stockpile of 200,000 tons of goods, has a number of long-term stable cooperative customers.

Q5.what services can we provide?
A:Accepted Delivery Terms: FOB,CFR,CIF,EXW;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,PayPal;
Language Spoken:English,Chinese

Q6.Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.

Q7.How can we get your price ?
A:We need below information to quote for you:
1). Product Name
2). Standard
3). Material Grade (Chemical Composition)
4). Dimension
5). Quantity
6). The Drawing for Special Parts