Material: (carbon steel):ASTM A105,20#、Q235、 16Mn、 ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2、 ASTM A694 F42, F46,F48,F50,F56,F60,F65,F70.
(Stainless steel): ASTM A182 F304、304L、F316、316L、ICr18Ni9Ti、321、18-8
Standard: Germany standard DIN2630-2638
Chemical Dep. HG20595-1997GB/T9115.1-2000--GB/T9115.4—2000, American standard ANSI B16.5、Chemical Dep. HG20617-1997、GB/T9115.1—2000—GB/T9115.4—2000.