What are the precautions for the specific use of stainless steel flanges1. To prevent the corrosion between the eyes due to the heating of the flange cover, the welding current should not be too large, about 20% less than the carbon steel electrode, the arc should not be too long, the interlayer coo
Common Defects in Welding Area of Spiral Submerged Arc Welded Steel PipeDefects that are easy to produce in the submerged arc welding area are pores, hot cracks, and undercuts.1. Bubbles. Bubbles mostly occur in the center of the weld bead. The main reason is that hydrogen is still hidden inside the
Pre-welding of straight seam steel pipe:Pre-welding includes seams and welds.1. The joint seam (that is, the forming seam) has no wrong edge or the wrong edge is less than the specified value. Generally, the amount of the wrong edge is less than 8% of the plate thickness, and the maximum is not more
Reasons and advantages of steel welding for large-diameter steel pipes1. The use of large-caliber stainless steel can be divided into oil well pipes (casings, oil pipes, and drill pipes, etc.), line pipes, boiler pipes, mechanical structure pipes, hydraulic prop pipes, gas cylinder pipes, geological
How to solve the deformation problem of spiral seam submerged arc welded steel pipeThe spiral seam submerged arc welded steel pipe is drilled in rotation and begins to enter the soft formation. Under the action of the tri-cone, the drill first produces elastic shear deformation of the stratum and th
Overview:ASTM A234 is the standard specification for pipe fittings of wrought carbon steel and alloy steel for moderate and high-temperature service. The Cr-Mo low alloy steel pipe fittings has been separately listed on our website. Carbon steel pipe fittings manufactured to ASMT A234 are usually fu
ASTM A192 boiler tubes are made of grade 192 stainless steel that has undergone numerous test sample hardness tests, flattening tests, flaring tests, flange tests and hydraulic tests. We basically manufacture these ASTM A192 boiler tubes according to the seamless cold drawn process to maintain their
ASTM A210 seamless medium carbon steel pipe is applied for boiler pipe and boiler flue pipe with the minimum thickness, including safety end, vault, supporting pipe and super heater pipe.SpecificationHot rolledOutside Diameter , mmTolerance, %OD≤101.6, WT≤2.4+40/-0OD≤101.6, 2.4＜WT≤3.8+35/-0OD≤101.6,
EN 10025 includes a series of European standards for structural steel products, delivery condition is specified as hot rolled. For example, hot rolled steel coils, hot rolled steel section. EN 10025 standard (6 parts) covers a wide range of structural steel product.Tolerance Chart of En 10025 Cold D
A179 scopeASTM A179/A179M, ASME SA179/SA179M is the standard applicable to Seamless cold drawn low carbon steel heat exchanger and condenser tubes, Those Standard require minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat tran
