STEEL STANDARDS AND GRADES

WHO WE ARE

Guangdong Kruper Steel Co., Ltd is a professional manufacturer with more than 20 years of experience in manufacturing Carbon steel, alloy materials established in 2001.

 

We have our own factory and provide a one-stop service for cutting, forming and surface processing of metal products. Covers an area of more than 10000 square meters.

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Common grades of carbon steel pipes
A 53Welded and Seamless Steel Pipe
A 161Seamless Low-Carbon and Carbon-Molybdenum Steel Still Tubes for Refinery Service
A 106Seamless Carbon Steel Pipe for High-Temperature Service
A 178Electric-Resistance-Welded Carbon Steel Boiler Tubes
A 120*Black and Hot-Dipped Zinc-Coaled (Galvanized)Welded and Seamless Steel Pipe for Ordinary Uses
A 179Seamless Cold-Drawn Low-Carbon Steel Heat-Ex-Changer and Condenser Tubes
A 134Electric-Fusion (Aro)-Welded Steel Plate Pipe (Sizes 16 in. and Over)
A 192Seamless Carbon Steel Boiler Tubes for High-Pressure Service
A 135Electric-Resistance-Welded Steel Pipe
A 199Seamless Cold-Drawn Intermediate Alloy-Steel Heat-Exchanger and Condenser Tubes
A 139Electric-Fusion (Arc)-Welded Steel Pipe (Sizes 4 in. and Over)
A 200Seamless Intermediate Alloy-Steel Still Tubes for Refinery Service
A 209Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes
A 210Seamless Medium-Carbon Steel Boiler and Superheater Tubes
A 211Spiral-Welded Steel or Iron Pipe
A 213Seamless Ferritic Chrome-Moly Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
A 214Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser Tubes
A 226Electric-Resistance-Welded Carbon Steel Boiler and Superheater Tubes for High-Pressure Service
A 250Electric-Resistance-Welded Carbon Molybdenum Alloy-Steel Boiler and Superheater Tubes
A 252Welded and Seamless Steel Pipe Piles
A 254Copper Brazed Steel Tubing
A 333Seamless and Welded Steel Pipe for Low-Temperature Service
A 334Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service
A 335Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
A 370Methods and Definitions for Mechanical Testing of Steel Products
A 381Metal-Arc Welded Steel Pipe for High-Pressure Transmission Service
A 405Seamless Ferritic Alloy-Steel Pipe Specially Heat Treated for High-Temperature Service
A 422Butt Welds in Still Tubes for Refinery Service
A 423Seamless and Electric Welded for Low Alloy Steel Tubes
A 450General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
A 498Seamless and Welded Carbon, Ferritic, and Austenitic Alloy Steel Heat-Exchanger Tubes with Integral Fins
A 500Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes
A 501Hot-Formed Welded and Seamless Carbon Steel Structural Tubing
A 512Cold-Drawn Buttweld Carbon Steel Mechanical Tubing (CDBW). 
A 513Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing (ERW-DOM). 
A 519Seamless Steel Mechanical Tubing (CDS or HFS). 
A 106Seamless Carbon Steel Mechanical Tubing (HFS). 
A 520Supplementary Requirements for Seamless and ERW Carbon Steel Tubular Products for High-Temperature Service Conforming to ISO Recommendations for Boiler Construction
A 523Plain End Seamless and Electric-Resistance-Welded Steel Pipe for High-Pressure Pipe-Type Cable Circuits
A 524Seamless Carbon Steel Pipe forA tmospheric and Lower Temperatures
A 530General Requirements for Specialized Carbon Steel and Alloy Pipe
A 539Electric-Resistance-Welded Coiled Steel Tubing for Gas and Fuel Oil Lines
A 556Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes
A 557Electric-Resistance-Welded Carbon Steel Feedwater Heater Tubes
A 587Electric-Resistance-Welded Carbon Steel Pipe for the Chemical Industry
A 589Seamless and Welded Carbon Steel Water Well Pipe
A 618Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing
A 655Special Requirements for Pipe and Tubing for Nuclear and Other Special Applications
A 671Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
A 672Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures
A 691Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures
A 692Seamless Medium Strength Carbon-Molybdenum Alloy-Steel Roller and Superheater Tubes
A 700Rec. Practice for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment