... Pipe 34CrMo4Standard: ASTM A335Steel Gr.: P1, P2, P5, P9, P11, P12, P21, P22, P91, P92Usage: High temperature ... , electricity, boiler industry of high-temperature resistance, low temperature resistance, corrosion resistance in pilie lines ... , etc. HIGH QUALITY, COMPETIIVE PRICE, EXCELLENT SERVICE ARE YOUR BEST CHOICE Seamless Alloy-Steel Pipe ...