Material Specifications & International Equivalents

As a prominent member of the STKM series mechanical structural tubes, STKM11A corresponds to various international material standards including:

  • China: 10# steel (GB/T 699)

  • United States: 1010 steel (ASTM standards)

  • Germany: C10 (DIN standards)

  The optimized manganese content of 0.30%-0.60% ensures balanced mechanical properties while maintaining excellent processing characteristics across various manufacturing operations and service conditions.

Mechanical Properties & Performance Characteristics

  These low-carbon seamless tubes demonstrate outstanding mechanical capabilities in annealed condition with tensile strength ≥335MPa, yield strength ≥205MPa, and exceptional elongation ≥25%. The superior plastic deformation capacity enables excellent cold forming performance including bending, flaring, and other shaping operations without material failure concerns.

  The excellent welding performance requires no complex preheating procedures, while maintaining good machinability and processing characteristics. Although offering lower strength compared to medium-carbon steels, these tubes provide ideal solutions for applications prioritizing ease of fabrication and welding reliability over extreme mechanical strength.

Applications & Industrial Solutions

STKM11A seamless tubes serve various applications across multiple sectors:

Mechanical Structures

Lightweight supports and non-load-bearing connecting rods

Equipment housing frames and structural frameworks

Machinery components requiring easy formability

Fluid Transportation Systems

  • Low-pressure water pipes and air conduits

  • Standard oil passage tubes and general fluid transfer

  • Pneumatic system components

Automotive Components

  • Seat frames and interior support members

  • Low-pressure oil pipes and automotive structural parts

  • Vehicle interior applications

Hardware Products

  • Tool handles and small structural elements

  • General hardware components and consumer products

  • Industrial hardware applications

Customization & Delivery Conditions

  STKM11A tubes are typically supplied in annealed condition (GBK) to ensure optimal plasticity and processability, ready for immediate cold forming, welding, and other manufacturing operations. Tenjan's manufacturing flexibility allows customized solutions in dimensions, surface quality, and secondary processing to meet specific application requirements.

Advantage & Quality Commitment

  Backed by 21 years of specialized experience in seamless tube manufacturing and 30 years of technical expertise in our R&D team, Tenjan delivers reliable STKM11A tubular solutions through advanced production equipment and comprehensive quality control systems. Our full-process manufacturing capability ensures consistent material quality and performance, while flexible order quantities and professional technical support provide customized solutions for your specific application needs.