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GNEE's S355J2H precision seamless steel pipe is usually produced using a cold rolling process, which helps improve its precision and reduce losses during machining.

DIN 2393 standard is applicable to welded precision steel tubes with special dimensional accuracy. These steel tubes are mainly used in occasions with high dimensional accuracy requirements.

We make API 5CT C90 Casing Tubing according to the SY/T6194-96 standard, it is open as short string sort and long string sort gave their couplings.

ASTM A335 P11 Pipe (ASME SA335 P11) is Chrome Moly Alloy Seamless Pipe that used for high-temperature services, P11 Grade Pipe Chrome content at 1.00% to 1.50%, Moly content 0.44% to 0.65%, Minimum tensile strength 415MPa, minimum yield strength 205Mpa.