Seamless Alloy-Steel Pipe 34CrMo4 standard:astm a335 grade:P1, P2, P5, P9, P11, P12, ... be required according to customers' requirement 10/ Application: Widely used in oil, chemical industry, electricity, boiler industry of high-temperature ... resistance, low temperature resistance, corrosion resistance in pilie lines, etc. HIGH QUALITY, COMPETIIVE PRICE, EXCELLENT SERVICE ...