Industrial News
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Production process of large-diameter straight seam steel pipe
A large-diameter longitudinally welded pipe is a general term. It is produced by a steel strip. The pipes that are welded by high-frequency welding equipment are called longitudinally welded pipes. (The name is given because the welds of the steel pipe are in a straight line). Among them, accordi...Read more -
Length dimension of galvanized seamless steel pipe
1. Indefinite length (usual length) Galvanized seamless steel pipes generally vary in length, which is called indefinite length within the scope of the standard. Indefinite length is also called normal length (through ruler). For example, the length of 159*4.5 galvanized seamless steel pipe is us...Read more -
High-frequency welding technology of submerged arc steel pipe
1. Control of the weld gap: After rolling by multiple rollers, the strip steel is sent to the welded pipe unit. The strip steel is gradually rolled up to form a round tube blank with a tooth gap. Adjust the pressing amount of the squeeze roller to control the weld gap between 1 and 3 mm and make ...Read more -
Comparison of various coating processes for steel pipe anticorrosion
Steel pipe anti-corrosive coating process one: Due to the curtain coating method, the film sags seriously. Besides, due to the unreasonable design of rollers and chains, the coating film has two longitudinal and multiple circular scratches. This process is being eliminated. The only advantage of ...Read more -
How to prevent spiral steel pipes from being damaged during transportation
1. Fixed-length spiral steel pipes do not need to be bundled. 2. If the ends of the spiral steel pipe are threaded, they should be protected by thread protectors. Apply lubricant or anti-rust agent to the thread. The spiral steel pipe has holes at both ends and pipe mouth protectors can be added ...Read more -
What to prepare before steel pipe welding
Welding equipment: Welding machines are used for root welding; multi-functional automatic pipe welding equipment is used for filling and capping. Welding materials: φ3.2 E6010 cellulose electrode is used for root welding; φ2.0 flux-cored self-protected welding wire is used for filling and cover. ...Read more
