Seamless steel tubes for coal mining- GB/T 17396-2009

Short Description:

Seamless steel pipe for coal mine is mainly used to manufacture seamless pipe for

hydraulic prop in coal mine.


  • Payment: 30% deposit, 70% L/C or B/L copy or 100% L/C at sight
  • Min.Order Quantity: 25 T
  • Supply Ability: Annual 20000 Tons Inventory of Steel Pipe
  • Lead Time: 7-14 days if in stock, 30-45 days to produce
  • Packing: Black Vanishing, bevel and cap for every single pipe; OD below 219mm need to pack in bundle, and each bundle no exceed 2 tons.
  • Product Detail

    Product Tags

    Overview

    Standard:   GB/T 17396-2009 Heat Treatment: Tempering
    Grade Group: 20、35、45,Etc Outer Diameter(Round): 10 - 1000 Mm
    Section Shape: Round Application: seamless pipe for hydraulic prop
    Place Of Origin: China Surface Treatment: As Customer's Requirement
    Thickness: 1 - 100 Mm Technique: Hot Rolled
    Length: Fixed Length Or Random Length Special Pipe: Thick Wall Pipe
    Certification: ISO9001:2008 Usage: seamless pipe for hydraulic prop
    Alloy Or Not: Alloy Test:NDT

    Application

    Seamless steel pipe for coal mine is mainly used to manufacture seamless pipe for hydraulic prop in coal mine.

    Main Grade

    Grade of high-quality carbon structural steel: 20#35#

    Chemical Component

      C Si Mn Nb RE Cr Ni Cu Mo P S
    20 0.17-0.23 0.17-0.37 0.35-0.65 <0. 25 <0. 25 <0. 20 <0. 035 <0. 035
    35 0.32-0.39 0.17—0. 37 0. 50一0.8 <0. 25 <0. 25 <0. 20 <0. 035 <0. 035
    45 0.42-0.50 0.17 一0. 37 0.50 一0.8 <0. 25 WO. 25 WO. 20 <0. 035 <0. 035
    27SiMn 0.24-0.32 1.10 一1.4 1.10 一1.4 W0. 30 <0.30 <0. 20 <0.15 <0. 035 <0. 035
    30MnNbREa 0.27-0.36 0. 20一0. 60 1.20 一1. 60 0.020一0. 050 0. 02一0. 04 <0.30 <0.30 <0. 20 <0.15 <0. 035 <0. 035
    a The content of re is calculated as 0.02% ~ 0.04% added to the molten steel.

    Mechanical Property

    Mechanical Property
    Grade Tensile strength Yield Elong after fracture Reduction of area Shork absorption energy (KV2)/J
    Rm/MPa MPa A/% Z/%
      Steel tube wall thickness/mm    
      <16 >16 〜30 >30    
    no more less
    20 410 245 235 225 20  
    35 510 305 295 285 17
    45 590 335 325 315 14
    27SiMn 980 835 12 40 39
    30MnNbRE 850 720 13 45 48

    Test Requirement

    In addition to ensuring the chemical composition and mechanical properties, the steel pipe directly rolled with ingot shall be subject to low power inspection.

    Supply Ability

    Supply Ability: 2000 Tons Per Month Per Grade of   Seamless steel tubes for coal mining.

    Packaging

    In Bundles And In Strong Wooden Box

    Delivery

    7-14 days if in stock, 30-45 days to produce

    Payment

    30% depsoit, 70% L/C or B/L copy   or  100% L/C at sight

    Product Detail


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