GOST9941-81 SEAMLESS COLD AND WARM-DEFORMED TUBES MADE FROM CORROSION-RESISTANT STEEL
GOST9940-81 SEAMLESS HOT-DEFORMED STAINLESS TUBES MADE FROM CORROSION-RESISTANT STEEL
1. The tubes shall be produced in compliance with the requirements of this Standard
and production schedules approved in compliance with the established procedure.
2. The tubes shall be produced from steel of grades (types) specified in table 3, with
chemical composition in compliance with GOST 5632-72.
It shall be allowed to produce tubes with microadding of rare-earth metals.
The contents of sulfur in steel for tubes, liable to be welded, shall not exceed 0.02 %.
3. The tubes shall be heat treated. At the customer’s request the tubes may be produced
without heat treatment and clarification of surface. The standards of mechanical
characteristics and curvature of tubes without heat treatment shall be stipulated by agreement
between the manufacturer and the customer.
4. The mechanical properties of tubes shall comply with those specified in table.
Petrochemical Industry ; Chemical Fertilizer Industry ; Oil Refining Industry ; Oil And Gas Industry ; Light Industry And Food Industry ; Pulp And Paper Industry ; Energy And Environmental Industries .
Flaring test ; Flattening test ; Bending Test ; Hydraulic Test ; Eddy Current test
OEM / ODM / Customized
ISO9001 ; ISO14001; ISO 18001; TUV ;
Seamless Or Welded avaiable
Straight or U-bend or Coil available
We are the professional duplex stainless steel pipe supplier and super duplex stainless steel pipe manufacturer
in China, providing high-quality duplex stainless steel pipes and super duplex tubing.