For pipe, carbon steel heat simmer pipe, carbon steel seamless pipe heat simmer factory I plant the production and sale of steel refrigeration simmer pipe, heat simmer pipe, U-shaped bend, S bend, coil spring elbow difficult bends, the outer diameter of 20-2200 * 2-60mm Material Q235, 20 #, 16Mn, A105, 304,316,20 G, 15CrMo, 12Cr1MoV, P91, X42-X80, L415, perform electrical standard, national standard, American standard, Germany standard, British standard.