... -610mm,WT:6-70mm,length:6-12m or according to the requirement of clients.4.Excutive standards: ... standards,we can also supply seamless steel pipe with standard of DIN,JIS,and so on,and also ... develop new products according to the requirements of our clients!5.Surface:black lacquered,varnish ... cut,plastic capped,painted.7.Application:seamless steel pipe for low and medium pressure boiler,high ...