The effect of pickling and passivation during prefabrication, welding, testing, and heat treatment will cause iron oxide, welding slag, grease, and other dirt to accumulate on the surface of the pipe (carbon steel pipe, carbon copper pipe, stainless steel pipe), which will reduce the corrosion resis

There are two main differences between oil casing and oil drill pipe:1. Different uses;2. The materials are different.Oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion.

Original surface: NO.1 surface that is heat treated and pickled after hot rolling. Generally used for cold-rolled materials, industrial tanks, chemical industry equipment, etc., with thicker thicknesses ranging from 2.0MM-8.0MM. Stainless steel pipe processing plants also have matte surfaces, NO.2B

01. DN65:1. When commercial facilities such as restaurants and shops are connected through a covered pedestrian street, and the buildings on both sides of the pedestrian street need to use the pedestrian street for safe evacuation, DN65 fire hydrants should be installed every 30m outside the shops o

With the continuous development of our country's economy, the country is vigorously developing the energy industry. Long-distance API oil and gas pipelines are an important way to ensure energy security. During the anti-corrosion construction process of oil (gas) pipelines, the surface treatment of

The characteristics of epoxy powder coating are as follows:① Epoxy powder coating has strong adhesion, especially to metal;② The paint film of epoxy powder coating has good mechanical properties, high hardness, scratch resistance, and corrosion resistance;③ Epoxy powder coatings have low melt viscos

General welded pipe: General welded pipe is used to transport low-pressure fluid. Made of Q195, Q215A, Q235A steel, and Q235B plain carbon. It can also be made of easy-to-weld 0317 standard model 6012 and steel mother 755 mild steel. Steel pipes are subject to hydraulic pressure, bending, flattening

Cleaning:1. Workpieces and fixtures should be cleaned of foreign objects such as oil, residual salt, paint, etc. before heat treatment2. The fixture used for the first time in the vacuum furnace should be degassed and purified in advance of a vacuum degree not lower than the required vacuum of the w

Straight seam steel pipe is a welding process of steel pipe opposite to spiral steel pipe. Because the welding process of this kind of steel pipe is relatively simple, and the welding cost is relatively low, it can achieve high efficiency during production, so it is relatively common in the market.

The difference between the straight seam steel pipe and spiral steel pipe. The production process of longitudinally welded pipe is relatively simple. The main production processes are high-frequency welded longitudinally welded pipe and submerged arc welded longitudinally welded pipe. The longitudin