#4140 High Tensile Steel Hollow Bar#4140 Ht Seamless Steel Tube#4140 Steel Tube Properties

qt seamless steel pipe

SHANDONG LE REN SPECIAL STEEL CO., LTD.
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Heat treated steel tube we produce are round steel tubing such as annealed tubing, normalized tubing and quenched & tempered steel tubing. Specification of steel tube we supply: Sizes:OD range from 20mm to 100mm, Thickess: from 4mm to 20mm Tolerances:Precision to h9, h10, h11 or even small to 0.02mm Roundness:75% of diameter tolerance Straightness:Good straightness to 0.5mm/m Surface roughness:Smooth to 0.8um Mechanical properties:Yield strength and tensile strength can be improved Machining:Suitable for machining and welding

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