GOST 19281 Rolled Steel With Enhanced Strength

pipe fittings materials data

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For the pipe fitting material, please check butt-weld-fitting-standard-data

This Standard applies to thick-sheet, general-purpose wide-strip, shaped, graded steel and roll-formed sections made of steel with enhanced strength for welded, riveted or bolted constructions mainly used in products without additional heat treatment.

Regarding the chemical composition norms, this Standard also applies to thin sheets, ingots, slabs, blooms, forged pieces and stampings.


1.1. Rolled steel shall have the classes of strength 265, 295, 315, 325, 345, 355, 375, 390 and 440.

1.2. Shape, dimensions and maximum deviations of the rolled steel shall meet the requirements of GOST 8509 (for equal angles), GOST 8510 (for unequal angles),

GOST 8239 (for I-beams), GOST 19425 (for I-beams and structural channels), GOST 26020 (for I-beams with parallel flanges), GOST 8240 (for structural channels), GOST 19903 (for rolled sheets), GOST 103 (for the strip) and GOST 82 (for general-purpose wide strips), GOST 7511, GOST 8278, GOST 8281, GOST 8282, GOST 8283, GOST 9234, GOST 10551, GOST 13229, GOST 14635, GOST 19771, GOST 19772 and GOST 25577 (for the roll-formed section), GOST 2590 (for the round bars), GOST 2591 (for the square bars) and GOST 21026 (for structural channel with a bent flange).

1.3. The rolled steel accuracy degrees regarding dimensions, flatness and curvature shall be specified in the customer’s order within the limits of this Standard’s product range. If the requirements are absent in the order, the accuracy degree shall be determined by the manufacturer.

1.4. Examples of conventional designations are given in Appendix 1.


2.1. Characteristics of the basic modification

2.1.1. The basic chemical composition for each class of strength are given in Appendix 2. Fraction of total mass of phosphorus in steel shall be no more than 0.035 %; that of sulfur shall be no more than 0.040 %.

Fraction of total mass of nitrogen in steel shall be no more than 0.012 %; that of arsenic shall be no more than 0.08 %. When steel is melted from Kerch ores, the fraction of total mass of arsenic shall be no more than 0.15 %, and the fraction of total mass of phosphorus shall be no more than 0.030 %.

The list of steel grades recommended for different classes of strength and thickness of shaped section and rolled section is given in Appendix 3; that of rolled sheet is given in

Appendix 4.

2.1.2. Finished rolled stock shall be hot-rolled and heat-treated or shall be after controlled rolling according to the order. If the instructions are absent in the order, then the manufacturing technique shall be determined by the manufacturer.

2.1.3. The surface, the edge and the end rolled steel requirements shall correspond to GOST 14637 (for rolled sheet) and GOST 535 (for rolled section and shaped section).

(Amended Wording, Amendment No. 1)

2.1.4. Sheet delamination shall not be allowed.

2.1.5. The tension mechanical characteristics and bending test conditions shall meet the requirements of table 1 (for shaped section and rolled section) and table 2 (for rolled sheets, general-purpose wide strips and roll-formed sections).

The bending test of the shaped section and rolled sheets with maximum thickness of 20 mm may not be carried out at the manufacturing plant. Moreover, the norms established by the manufacturer shall be observed.

C&N Huitong group can produce pipe fittings of such materials :

ASTM Standard MaterialASTM A53 A53M Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A106 A106M Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service
API 5L Specification for Line Pipe
ASTM A213 2018 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A312 A312M Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
ASTM A234 A234M Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
ASTM A403 A403M Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
ASTM A420 A420M Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service
ASTM A860 A860M Standard Specification for Wrought High-Strength Low-Alloy Steel Butt-Welding Fittings
ASTM A733 Standard Specification for Welded and Seamless Carbon Steel and Austenitic Stainless Steel Pipe Nipples
DIN Standard MaterialDIN1629 Seamless Circular Unalloyed Steel Tubes Subject to special requirements
DIN 2440 Medium-weight threaded steel tubes
DIN 2441 Steel Tubes Heavy Weight For Suitable For Screwing
GOST Standard MaterialGOST-1050 Sized Bars Made of High-Quality Structural Carbon Steel With a Special Surface Finish
GOST 8732 Seamless hot-deformed steel pipes-Range of sizes
GOST 19281 Rolled Steel With Enhanced Strength
JIS Standard MaterialJIS G3452 Carbon steel pipes for ordinary piping
JIS G3454 Carbon steel pipes for pressure service
JIS G3455 Carbon steel pipes for high pressure service
JIS G3456 Carbon steel pipes for high temperature service
JIS G3457 Arc welded carbon steel pipes
JIS G3458 Alloy Steel Pipes
JIS G3459 Stainless steel pipes
JIS G3460 Steel pipes for low temperature service
BS EN Standard MaterialBS EN 10255 Non-alloy steel tubes suitable for welding and threading Technical delivery conditions
BS EN 10253-1 Butt-Welding Pipe Fittings  Part 1: Wrought Carbon Steel for General Use and Without Specific Inspection Requirements
BS EN 10253-2 Butt-welding pipe fittings. part 2: Non alloy ferritic alloy steels with specific inspection requirements
BS EN10253-3 Butt-welding pipe fittings Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
BS EN 10253-4 Butt-welding pipe fittings Part 4:Wrought austenitic and austenitic-ferritic (duplex)stainless steels with specific inspection requirements