manufacturing process of seamless tube and pipe

• 无缝管生产

manufacturing process of seamless tube and pipe的用法和样例：

例句

1. Our company is the biggest cotton yarn appropriation paper tube inside Henan to produce a factory house.
   本公司是河南省内最大的棉纱专用纸管生产厂家。
2. Introduced in the paper is a newly developed centring-roll system used on the rotary pipe mill.
   介绍了一种用于斜轧钢管生产的新式定心辊装置。