... 200apply to oil, chemical, electric, boiler industry for high and low temperature, corrosion condition Stainless ... , middle pressure boiler and locomotive boilerFluid pipe for transportation 10# 20# Q295ASTM A106A,B,CA53A ... 1-200Apply to structure, engineering scaffolds, machining Petroleum casing pipeJ55 K55 N80 L80C90 C95 P110API SPEC ... transport Big Size Seamless Steel Pipes For Boiler ASTM A335P12