亚洲欧美日韩国产精品专区,久久久久久久久毛片精品,浓精喷进老师黑色丝袜,在暴雪时分亲了三个小时

Contact Us???
Your Position: Home > News > Industry News

Stainless steel high-temperature test cable pipeline material production process

2016/12/16??????view:
Material production process:
1 stainless steel pickling masterbatch cold drawing forming ultrasonic polishing / grinding
2 stainless steel cold forming argon arc welding technology and international leading inner core drawing technology. Production process implementation GB / T14975-94, GB / T14976-94, GB / T3090-2000 standard, according to customer requirements control steel pipe inside and outside finish, outside diameter and wall thickness tolerance.
Can do cutting closing, drilling, expanding and necking, sharpening, sealing, punching and other non-standard customized according to requirements