The main import and export situation of the seamless steel pipe
In general, seamless steel pipe has the large import quantum. China usually imports the seamless steel
pipe form Germany and Japan. Europe countries such as Romania, Russia, Switzerland, France, Spain,
Czech, Yugoslavia, and Hungary, are also the importing countries for China. And a small quantity of seamless
steel pipe will import from Argentina in South America, Mexico, etc.
According to different requirements in China, the specifications of seamless steel pipe are more than 100
kinds. The common specifications include 15922mm, 1595mm, 15918mm, 114.38mm, 114.310mm and
114.313mm. The length is 5-8mm or 47mm in generally.
The steel grade hot rolled carbon constructional usually is ST35.ST45 and ST65. The
smallest diameter is 305mm and the largest is 47813mm.
A small quantity seamless steel pipe importing from France and Spain with 183mm, 223mm and 26.93mm
specifications carry the general rules in Germany Mannesmann stainless steel pipe factory.
Seamless steel pipe importing from Japan and Hungary always consult the DIN2448, DIN1629 rules.
There are some qualities problems exist in the case of conversation B import claim, such as abnormal
tensile strength and serious corrosions and pits in seamless steel pipe, etc.
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