Lsaw Steel Pipe

Oxyfuel and plasma cutting play an important role during the production process of making welded steel pipe like ERW steel pipe. And forgetting to grind the joint after oxyfuel or plasma cutting would be an common mistake for a new welder.

Today, we can make it alone to make an essay to tell all of us who need to choose steel pipes or producing tubes. Adding a layer of oxide to the cut edge during the oxyfuel and plasma cutting processes would be the necessary step for steel pipe. And here are the notices:

First of all, the oxide layer has to be removed prior to welding due to the higher melting point of oxide than base metal.

What’s more, the oxides can also remain in the weld and cause porosity, inclusions, lack of fusion and other defects.

In addition, welders have to keep in mind to grind the joint down to the parent material prior to welding, as well as grind the inside and outside diameters of the pipe to remove these oxides and other potential contaminants.

1. Cutting requirements for seamless steel pipe is different from lsaw steel pipe: After measuring the length, use the hacksaw, manual cutting saw, small circular saw blade and other cutting tools to cut the required pipe. After cutting, the vertical flatness of both ends must be kept, and then the burrs are removed. If the file is removed, it is necessary to carry out the corners, but it must be kept moderate and not too large.

2. Seamless steel pipe and pipe fitting method: pipe fittings before the test assembly, determine the location of the installation and mark, use sandpaper or abrasive cloth to lightly wipe the pipe, pipe fittings and then scrub with cotton yarn with acetone, After the acetone is volatilized, evenly apply a layer of adhesive to the pipe fittings and bond them with a brush. Be sure to apply evenly.

The flat is inserted and transferred to the desired combination angle for installation. It can be tapped with a mallet to insert the tube completely, and it will be

Usage: Used for low pressure liquid delivery, such as water, gas, and oil.Process:LSAW (Longitudinal Submerge-arc Welded) UO(UOE)、RB(RBE)、JCO(JCOE)DSAW (Double Submerged arc welded)Quality Standard:LSAW, DSAW:GB/T3091 Welded steel pipe for low pressure liquid deliveryGB/T9711 Petroleum and natural gas industries--Steel pipe for pipelinesIS: 3589 Steel tubes for water and sewageIS : 1978-1982:Steel tubes for use in transportation of oil; gas & Petroleum products?BS: 1387 Steel Tubes for use for Water, Gas, Air and SteamASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessDIN 2458 WELDED STEEL PIPES AND TUBESEN10217 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature propertiesAPI 5L LSAW Line PipeSAW SSAW:SY/T5037 Spiral submerged arc-welded steel pipe for pipelines for low pressure field fluid serviceSY/T 5040 Spiral submerged arc-welded steel pipe pilesCJ/T 3022