Customization: | Available |
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Type: | Seamless |
Technique: | Cold Drawn |
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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 |
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 |
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.
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.
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%).