無縫異型管是一種通過冷拔或熱軋?zhí)幚砗蟮囊环N高精密的鋼管材料。由于無縫異型鋼管內外壁無氧化層、承受高壓無泄漏、高精度、高光潔度、冷彎不變形、擴口、壓扁無裂縫等優(yōu)點。所以主要用來生產氣動或液壓元件的產品，如氣缸或油缸，可以是無縫管，也有焊接管。

Seamless profiled steel pipe is a kind of high precision steel pipe material after cold drawing or hot rolling. Because the inner and outer walls of seamless special-shaped steel pipe have no oxide layer, withstand high pressure and no leakage, high precision, high gloss finish, no deformation in cold bending, flattening, no cracks and so on. So it is mainly used to produce pneumatic or hydraulic components, such as cylinders or cylinders, which can be seamless pipes, as well as welded pipes. 

精密鋼管的化學成分有碳C、硅Si、錳Mn、硫S、磷P、鉻Cr。

The chemical composition of precision steel pipe is carbon C, silicon Si, manganese and manganese, sulfur S, phosphorus P, chromium and chromium.

無縫異型鋼管的常用材質為10#、20#、35#、45#。

The common materials of seamless special-shaped steel pipe are 10, 20, 35, 45.

可生產的材質則很多，鋼只要是不太硬，基本都可根據需要進行生產。如：10#，35#，16Mn，40Cr.

There are many materials that can be produced. As long as the steel is not too hard, it can basically be produced according to needs. For example: 10, 35, 16Mn, 40Cr.