現(xiàn)在有很多焊接無縫異型管的地方，花費也會高一些，那么，如果是自己焊接異型鋼管的話，應(yīng)該注意哪些東西？下面重點說出六點來，詳細說出無縫異型管焊接所需要的六點注意事項。希望能夠幫助到大家（一）檢查水、電、氣是否接通，并按要求全部連接好，不能松動。水、電、氣都是無縫異型管焊接過程中的危險因素，所以在焊前一定要檢查好。

Now there are many places to weld seamless special-shaped pipes, and the cost will be higher. So, if you weld special-shaped pipes yourself, what should you pay attention to? The following six points are highlighted, and the six points for attention in seamless special-shaped pipe welding are stated in detail. Hope to be able to help you (1) check whether water, electricity and gas are connected, and according to the requirements of all the connections, can not be loosened. Water, electricity and gas are all risk factors in the welding process of seamless special-shaped pipe, so it must be checked before welding.

（二）使用相關(guān)工具清潔母材表面，即用刷子或砂紙徹底清除母材表面水、油、氧化物等雜質(zhì)，以保證焊接質(zhì)量。

(2) Use relevant tools to clean the surface of base metal, i.e. use brush or sandpaper to completely remove impurities such as water, oil and oxide on the surface of base metal, so as to ensure the welding quality.

（三）要注意無縫異型管焊接工作場所的清理，不能有易燃、易爆物,采取避風(fēng)措施等。

(3) Attention should be paid to the cleaning of welded workplaces for seamless special-shaped pipes. No flammable or explosive substances should be allowed and wind-proof measures should be taken.

（四）認真檢查焊機的接線是否符合要求，電線質(zhì)量問題是最容易引發(fā)事故的因素，所以一定不能掉以輕心。

(4) Carefully check whether the wiring of the welder meets the requirements. Wire quality is the most likely factor to cause accidents, so we must not take it lightly.

（五）對無縫異型管母材進行焊前檢查，因為這直接關(guān)系著焊接效果，所以是很在必要的。

(5) It is necessary to inspect the base metal of seamless special-shaped pipe before welding because it is directly related to the welding effect. （六）重要焊接結(jié)構(gòu)要采用化學(xué)清洗法進行清潔?？珊唵蔚夭捎帽驘龎A硫酸等清洗其表面的水、油、高熔點氧化膜、氧化物等污染物。

(6) Chemical cleaning should be used to clean important welded structures. Contaminants such as water, oil, high melting point oxide film and oxide can be simply cleaned by acetone or caustic soda sulfuric acid.