PPH储罐生产厂家在储罐的制造和施工方面，各种大型PPH储罐的施工方法，近几年我国的PPH储罐生产厂家也在不断发展。下面详细介绍下PPH储罐的焊接技术

   （1）埋弧自动横焊技术国内经过十多年的攻关，已取得了突破性进展，单丝埋弧焊技术已基本成熟，操作简单，焊接质量稳定，将在大型储罐焊接中发挥重要作用。今后，要开展双丝或多丝埋弧横焊技术的研究，进一步提高焊接效率。

   （2）在大型储罐的自动焊设备与焊材方面，国产化程度还不够高，特别是与引进的高强钢板相匹配的自动

   （3）用于纵缝焊接的气电立焊的研究，国内尚处于起步阶段。应研究开发用于储罐纵缝焊接的气电立焊技术，实现国产化，对打破国外技术垄断，减少工程成本，满足储罐建设的需要具有重要意义。此外，应解决目前所采用的气电立焊的焊机结构改造，使之能适用于储罐倒装施工工艺，进一步提高拱顶储罐的焊接质量和建造速度，缩短施工周期，提高经济效益。

   （4）倒装储罐埋弧自动横焊的研究和应用历史不长，还有许多问题需要解决。

   （5）CO2半自动气体保护焊接技术相对于传统的焊条电弧焊无疑有着优势，但这种方法要大面积推广应用在室外，还有许多问题需要解决。一是辅助配套机具要轻便、灵活，配线要有足够的长度。根据不同的焊件或部位，要研制相应的防风辅助装置等。可以预测，pph储罐生产厂家的焊接技术的发展趋势在石油化工等焊接优先域具有较好的应用前景。

   （6）药芯焊丝的气体保护焊将是大型pph储罐生产厂家建造的发展方向。在低温储罐焊接中，采用自动焊有利于保证热影响区低温冲击性能的稳定。

   （7）自保护药芯焊丝半自动焊成功用于大口径长输管道的焊接。这种方法焊接效率高，质量好，抗风能力强，适合野外环境下的焊接作业，也是今后大型pph储罐生产厂家建造应深入研究应用的焊接方法。

PPH tank manufacturers in the tank manufacturing and construction, a variety of large PPH tank construction methods, in recent years, China's PPH tank manufacturers are also developing. The following is a detailed description of PPH tank welding technology

(1) Submerged arc automatic horizontal welding technology has made breakthroughs after more than ten years of research in China. Single wire submerged arc welding technology has been basically mature, simple operation, stable welding quality, and will play an important role in the welding of large storage tanks. In the future, double or multi - wire submerged arc welding technology should be studied to further improve welding efficiency.

(2) In the automatic welding equipment and welding materials of large storage tanks, the degree of localization is not high enough, especially the automatic matching with the introduction of high strength steel plate

(3) The research of gas-electric vertical welding for longitudinal seam welding is still in its infancy in China. It is of great significance to study and develop gas-electric vertical welding technology for longitudinal seam welding of storage tanks to realize localization, break foreign technological monopoly, reduce engineering cost and meet the needs of storage tank construction. In addition, it is necessary to solve the structural transformation of the welding machine used in the current gas-electric vertical welding, so that it can be applied to the inverted construction technology of the storage tank, and further improve the welding quality and construction speed of the vault storage tank, shorten the construction period, and improve the economic benefit.

(4) The research and application of automatic submerged arc welding for inverted storage tanks is not long, and there are still many problems to be solved.

(5) CO2 semi-automatic gas shielded welding technology undoubtedly has advantages over traditional electrode arc welding, but there are still many problems to be solved if this method is to be widely promoted and applied outdoors. It is auxiliary form a complete set machine is provided want deft, flexible, wiring should have enough length. According to different welding parts or parts, to develop the corresponding windproof auxiliary devices. It can be predicted that the development trend of PPH tank manufacturers' welding technology has a good application prospect in the welding priority fields such as petrochemical industry.

(6) Gas shielded welding of flux cored wire will be the development direction of large-scale PPH tank manufacturers. In the welding of low temperature storage tank, the use of automatic welding is beneficial to ensure the stability of low temperature impact performance of heat affected zone.

(7) Semi-automatic welding of self-protecting flux-cored wire is successfully used for welding of large-diameter long-distance pipeline. This method has high welding efficiency, good quality and strong wind resistance, which is suitable for welding in the field environment. It is also a welding method that should be further studied and applied in the construction of large-scale PPH tank manufacturers in the future.