-
Slag inclusion cutting method for straight seam steel pipe
1. Regardless of whether the straight seam steel pipe is rotated or fixed The cutting nozzle should be kept perpendicular to the surface of the straight seam steel pipe. After the cutting is completed, the cutting nozzle is gradually tilted forward at an angle of 70°-80° with the tangent line of ...Read more -
How to prevent spiral steel pipe from being damaged during transportation
1.Fixed-length spiral steel pipes can be unbundled. 2.If the two ends of the spiral steel pipe are threaded, they should be protected by thread protectors. Apply lubricant or rust inhibitor on the thread. The two ends of the spiral steel pipe are broken, and the two ends can be equipped with nozz...Read more -
What is the function of the three links and four links to steel pipe fittings
The three links are steel pipe fittings and pipe connectors. Also called three-way pipe fittings or three-way pipe fittings, three-way joints, used in the branch of the main pipeline. Tees are divided into equal diameters and reducing diameters. The connecting ends of equal diameter tees are all ...Read more -
Antibacterial stainless steel
In the production of kitchen equipment, medical equipment, bathroom supplies, and cleaning and decoration, people have been looking forward to the emergence of new metal materials that can be both antibacterial and styling. A new material with both structural and functional characteristics-antiba...Read more -
Comparison of technical characteristics of spiral welded pipe and longitudinal welded pipe
Comparison of technical characteristics of spiral welded pipe and straight-seam welded pipe: ·Metallurgical properties of materials LSAW pipes are produced from steel plates, while spiral welded pipes are produced from hot-rolled coils. The rolling process of the hot strip steel mill has a series...Read more -
Testing method of coated steel pipe
A. Visual inspection Visually inspects the appearance quality of the coated steel pipe. B. Thickness measurement Take two cross-sections of different lengths from the two ends of the coated steel pipe, and measure the coating thickness at any four points on the circumference at right angles with ...Read more -
Matters needing attention in use of thick-walled steel pipe
The wall thickness can be called a thick-walled steel pipe. There are some doubts about this. It depends on the ratio of the outer diameter of the steel pipe to the wall thickness of the steel pipe. For example, a steel pipe with a diameter of 50 mm, 10 mm can be regarded as a thick-walled steel ...Read more -
Production process of spiral steel pipe
(1) Raw materials are strip steel coils, welding wires, and fluxes. Strict physical and chemical tests are required before investment. (2) Butt joint of strip steel head and tail, adopt single wire or double wire submerged arc welding, after coiling into steel pipe, adopt automatic submerged arc ...Read more -
Longitudinal welded pipe anti-rust maintenance and inspection methods
The longitudinal welded pipe has a simple production process, high production efficiency, low cost, and rapid development. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes. A narrower blank can be used to produce welded pipes with larger pipe diamete...Read more -
What is the difference between cold-drawn steel pipe and hot-rolled steel pipe
(1) The difference between hot working and cold working: hot rolling is hot working, and cold drawing is cold working. The main difference: is that hot rolling is rolling above the recrystallization temperature, cold rolling is rolling below the recrystallization temperature, and cold rolling is ...Read more -
Anti-corrosion practices for buried steel pipes
Pipe rust removal → Apply primer → Top coat → Second coat of top coat → Wrap glass silk cloth → Top coat → Top coat; Inner wall construction process: pipe rust removal → primer application → top coat → second top coat → third top coat 1. Pipe rust removal Before applying primer, the surface of th...Read more -
Hot rolling and cold rolling technology of seamless steel tube
Seamless steel pipes are made of steel ingots or solid tube billets through the perforation into capillary tubes and then made by hot rolling, cold rolling, or cold drawing. The specifications of seamless steel pipes are expressed in millimeters of outer diameter * wall thickness. Seamless steel ...Read more