... the requirement of clients.4.Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above 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 ... liquid service,petroleum cracking,chemical fertilizer equipment,drawing-oil-equipment and structure purpose!8.Packing:bundles wrapped with strong steel strip ...