Characteristics of seamless steel pipe products

　　1, chemical analysis: the chemical composition of the chemical analysis, chemical composition in line with the standard requirements.

　　2. Air pressure. The pressure test of pressure seamless steel pipe by the pressure test, in the specified pressure value does not keep not less than 5 seconds, not leak, conventional supply water pressure test for 2.45MPa. pressure test for P=0.5MPAa.

　　3, corrosion test: the industrial corrosion resistant seamless steel pipe is in accordance with the standard or the two sides of the agreement of the corrosion method of seamless steel pipe corrosion resistance test, no intergranular corrosion tendency.

　　4, process performance test: flattening test. Tensile test. Impact test. Flaring test. Hardness test. Metallographic test. Bending test. Nondestructive testing (including eddy current flaw. X-ray and ultrasonic inspection).

　　5, the implementation of standards:

　　China: GB/T14975-2002.GB/T14976-2002.GB13296-91.GB9948-88.GB5310-95.GB2270-80

　　United States: A213/A213-99a.ASTN312/A312M-00b.ASTM A269-00.ASTMA511-96. ASTM

　　Japan: JIS3463.JIS3446.JIS3448.JIS3459

　　We have adopted advanced production equipment and technologies to manufacture our erw steel pipes and galvanized seamless pipe, which can not only improve product quality, but also save raw materials. Our products have high strength, good toughness and resistance to corrosion.