環(huán)球新聞資訊，9月6日獲悉：【勝倉(cāng)管業(yè) 高經(jīng)理13730570531  QQ：2927372564】20號(hào)厚壁無(wú)縫鋼管在5mm以上稱(chēng)之為厚壁無(wú)縫鋼管。生產(chǎn)流程：管坯--鋸斷--加熱--穿孔--軋管--定徑--冷床--矯直--切頭尾--尺寸測(cè)量--無(wú)損檢測(cè)--噴標(biāo)--包裝。Global News, September 6, learned: [Shengkuang Senior Manager 13730570531 QQ: 2927372564] 20 thick-walled seamless steel pipe above 5 mm called thick-walled seamless steel pipe. Production process: billet - sawing - heating - piercing - rolling - sizing - cooling bed - straightening - cutting head and tail - size measurement - nondestructive testing - marking - packaging.【勝倉(cāng)管業(yè) 高經(jīng)理13730570531  QQ：2927372564】

壁厚在5mm以上稱(chēng)之為厚壁無(wú)縫鋼管。生產(chǎn)流程：管坯--鋸斷--加熱--穿孔--軋管--定徑--冷床--矯直--切頭尾--尺寸測(cè)量--無(wú)損檢測(cè)--噴標(biāo)--包裝。20號(hào)大口徑厚壁無(wú)縫鋼管幾何尺寸及外形檢查主要包括鋼管壁厚檢查，鋼管外徑、橢圓度檢查，鋼管長(zhǎng)度檢查，鋼管彎曲度檢查，鋼管端面坡口角度和鈍邊檢查。大口徑無(wú)縫鋼管工件在加熱和冷卻過(guò)程中,由于表層和心部的冷卻速度和時(shí)間的不一致,形成溫差，就會(huì)導(dǎo)致體積膨脹和收縮不均而產(chǎn)生應(yīng)力。20號(hào)厚壁無(wú)縫鋼管工藝性能檢驗(yàn)主要包括拉伸試驗(yàn)，沖擊試驗(yàn)，硬度試驗(yàn)和液壓試驗(yàn)。【勝倉(cāng)管業(yè) 高經(jīng)理13730570531  QQ：2927372564】Wall thickness above 5mm is called thick wall seamless steel pipe. Production process: billet - sawing - heating - piercing - rolling - sizing - cooling bed - straightening - cutting head and tail - size measurement - nondestructive testing - marking - packaging. The inspections of the geometry and shape of No. 20 large-diameter thick-wall seamless steel pipe mainly include the inspections of the wall thickness, the outer diameter and ovality of the steel pipe, the length of the steel pipe, the bending degree of the steel pipe, the groove angle of the end surface of the steel pipe and the blunt edge. During the heating and cooling process of large diameter seamless steel tube workpiece, the difference of cooling speed and time between the surface and the center results in temperature difference, which will lead to uneven volume expansion and shrinkage and stress. The technical performance test of No. 20 thick-walled seamless steel tube mainly includes tensile test, impact test, hardness test and hydraulic test.

厚壁無(wú)縫鋼管生產(chǎn)的生產(chǎn)制造工藝可分為冷拔、【勝倉(cāng)管業(yè) 高經(jīng)理13730570531  QQ：2927372564】冷軋、熱軋、熱擴(kuò)四種基本方式，鋼管的材質(zhì)為10#、20#、35#、45#稱(chēng)為 普通鋼管，按照用途分為結(jié)構(gòu)用無(wú)縫鋼管；輸送用無(wú)縫鋼管；鍋爐用無(wú)縫鋼管；鍋爐用高壓無(wú)縫鋼管；化肥設(shè)備用高壓無(wú)縫鋼管；地質(zhì)磚探用無(wú)縫鋼管；石油磚探用無(wú)縫鋼管；石油裂化用無(wú)縫鋼管；船舶用無(wú)縫鋼管；冷拔冷軋精密無(wú)縫鋼管；各種合金管。無(wú)縫鋼管表示方法為外徑，壁厚，厚壁無(wú)縫鋼管主要用于機(jī)械加工，煤礦，液壓鋼，等多種用途。

The production process of thick-walled seamless steel pipe can be divided into four basic modes: cold drawing, cold rolling, hot rolling and hot expansion. The material of the steel pipe is 10, 20, 35, 45, which is called common steel pipe, and is divided into structural seamless steel pipe, seamless steel pipe for conveying, seamless steel pipe for boiler, high-pressure seamless steel pipe for boiler, and chemical fertilizer installation. Spare high-pressure seamless steel pipe; Seamless steel pipe for geological brick exploration; Seamless steel pipe for petroleum brick exploration; Seamless steel pipe for petroleum cracking; Seamless steel pipe for ships; Cold-drawn and cold-rolled precision seamless steel pipe; Various alloy pipes. Seamless steel pipes are represented by outer diameter, wall thickness, thick wall seamless steel pipes mainly used for mechanical processing, coal mine, hydraulic steel, and other purposes.