無縫異型管是經(jīng)冷拔制成各種異型的無縫鋼管。無縫異型管一般是根據(jù)斷截面來區(qū)分的，按材料來說又可分為無縫鋼管、無縫異型鋼管，鋁合金無縫異型鋼管，塑料無縫異型鋼管。無縫異型鋼管的發(fā)展主要是產(chǎn)品品種的發(fā)展，包括斷面形狀、材質(zhì)和性能。擠壓法、斜模軋法和冷拔法是生產(chǎn)無縫異型鋼管的有效方法，它適用于生產(chǎn)各種斷面和材質(zhì)的無縫異型鋼管材。為了能生產(chǎn)品種繁多的無縫異型鋼管，還必須擁有多種生產(chǎn)手段。20世紀(jì)90年代，我國在原來只有冷拔的基礎(chǔ)上，又開發(fā)出輥拔、擠壓、液壓、旋軋、旋壓、連軋、回轉(zhuǎn)鍛造和無模拔等幾十種生產(chǎn)方法，并在不斷地改進(jìn)和創(chuàng)造新的設(shè)備與工藝。
Seamless special-shaped steel pipe is made of various special-shaped seamless steel pipe by cold drawing. Seamless special-shaped steel pipes are generally distinguished according to the broken section, and can be divided into seamless special-shaped steel pipes, aluminum alloy seamless special-shaped steel pipes, plastic seamless special-shaped steel pipes according to the material. The development of seamless special-shaped steel pipe is mainly the development of product varieties, including section shape, material and performance. Extrusion method, oblique die rolling method and cold drawing method are effective methods to produce seamless profiled steel pipes. They are suitable for producing seamless profiled steel pipes with various sections and materials. In order to produce a wide variety of seamless special-shaped steel tubes, it is necessary to have a variety of means of production. In the 1990s, on the basis of cold drawing, China developed dozens of production methods, such as roll drawing, extrusion, hydraulic pressure, spinning, spinning, continuous rolling, rotary forging and die-free drawing, and constantly improved and created new equipment and processes. 無縫異型鋼管分，異型方管、矩?zé)o縫異型鋼管、異型焊管、螺旋焊管，規(guī)格：20*20mm-500mm，壁厚0.6mm-20mm，螺旋鋼管規(guī)格，219mm-2020mm，壁厚5mm-20mm.直縫規(guī)格有4分、6分、1寸、1.2寸、1.5寸、2寸、2.5寸、3寸、4寸、5寸、6寸、8 寸、102、108、127、133、139、159、168、177、194、219、273、325等規(guī)格無縫異型鋼管一般多是指方矩型鋼管。
Seamless special-shaped steel pipe is divided into four parts, special-shaped square pipe, moment seamless special-shaped steel pipe, special-shaped welded pipe, special-shaped welded pipe, special-welded pipe, spiral welded pipe, specification: 20*20mm-500mm, wall thickness 0.6mm-20mm, spiral steel pipe specification, 219mm-2020mm, 219mm-2020mm, wall thickness 5mm-20mm.Strait specification specification has 4 minutes, 6 minutes, 1 incincinch, 1.2 inch, 1.2 inch, 1 inch, 1.2 inch, 2 inch, 2.5 incincincincinch, 2.5 inch, 2.5 incinch, 2 incincincincinc3 incincincincincincinc, 4 incincincinch, 5 inch, 5 inch, The results of this study are as follows:1. 19, 273, 325 and other specifications of seamless special-shaped steel pipes generally refer to rectangular steel pipes.
無縫異型鋼管分類
Classification of Seamless Special-shaped Steel Pipe
按鋼管截面形狀尺寸的不同又可分為等壁厚異型無縫鋼管(代號(hào)為D)、不等壁厚異型無縫鋼管(代號(hào)為BD)、變直徑異型無縫鋼管(代號(hào)為BJ)。
According to the shape and size of steel tube cross section, it can be divided into iso-wall thickness special-shaped seamless steel tube (code D), unequal-wall thickness special-shaped seamless steel tube (code BD), and variable-diameter special-shaped seamless steel tube (code BJ).
無縫異型鋼管一般是根據(jù)斷截面來區(qū)分的，按材料來說又可分為無縫鋼管無縫異型鋼管，鋁合金無縫異型鋼管，塑料無縫異型鋼管。下面主要介紹一下鋼管無縫異型鋼管。
Seamless special-shaped steel pipes are generally distinguished according to the broken section, and can be divided into seamless special-shaped steel pipes, aluminum alloy seamless special-shaped steel pipes, plastic seamless special-shaped steel pipes according to the material. The following is mainly about the seamless special-shaped steel pipe.
鋼管無縫異型鋼管可分為橢圓形異型鋼管、三角形異型鋼管、六角形異型鋼管、菱形異型鋼管、八角形異型鋼管、半圓形異型鋼圓，不等邊六角形異型鋼管、五瓣梅花形異型鋼管、雙凸形異型鋼管、雙凹形異型鋼管、瓜子形異型鋼管、圓錐形異型鋼管、波紋形異型鋼管。
Seamless special-shaped steel pipe can be divided into elliptical, triangular, hexagonal, rhombic, octagonal, semi-circular, unequal hexagonal, five-petal plum-blossom, double convex, double concave, melon-shaped, conical and corrugated special-shaped steel pipes. Steel pipe.
