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Chrome Molybdenum Alloy Steel Tube 4130 / 4140

  • Chrome Molybdenum Alloy Steel Tube 4130 / 4140
  • Chrome Molybdenum Alloy Steel Tube 4130 / 4140
  • Chrome Molybdenum Alloy Steel Tube 4130 / 4140

Chrome Molybdenum Alloy Steel Tube 4130 / 4140

    Payment Type: L/C,T/T,D/P,Paypal,Western Union
    Terms of Trade: FOB,CFR,CIF
    Min. Order: 5 Ton
    Delivery Time: 30 Days
    Packaging: Bundles Packing with plastic bags wrapped
    Productivity: 5000tons per month
    Brand: HuiJie
    Transportation: Ocean,Land
    Place of Origin: Made in China
    Certificate: TS16949 ISO9001
    HS Code: 7304.3110
    Port: Ningbo,Shanghai

Basic Info

Model No.: SAE 4130 / SAE 4140

Product Description

Cr-Mo Alloy SAE4130 Seamless Steel Tube

30CrMo 4130 / 42CrMo 4140 cold drawn seamless alloy steel tubing





Tensile Min 725MPa
Yield Min 620MPa
Elongation (50.8mmG.L) Min 15%
Hardness 230-280 HB
Condition Stress relieved.
Straightness better than: 1 in 2000 MAX (1MM DEVIATION IN 2000MM)
Eccentricity (Max) 5%
Grain size ≥ 9 according to ASTM E112
Residual Hoop stress <80Mpa according to ASTM E1928-99


1 55.56 +0.18/-0 46.20 +0/-0.18 4.68 3070
2 69.85 +0.20/-0 60.32 +0/-0.20 4.765 3070
3 88.90 +0.25/-0 78.00 +0/-0.25 5.45 3070


Eddy Current Examination according to ASTM E309shall be applied on all tubes using External Longitudinal notch with depth of no more than 7.5% of wall thickness (maximum notch depth 0.80mm and minimum notch depth 0.30mm) , 0.30mm maximum width and 25mm maximum length, made from the same chemistry and size of tubing.


The tubes must have smooth surface


The request information shall be marked on each tube with paint, and

each bundle shall be identified with a securely attached metal tag.


The tubes inside and outside shall be coated with a rust inhibitor


Standard Export worthy packing, preferably in hexagonal bundle with plastic wrapped and steel strapped.


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Alloy Cr Mo Steel TubeSeamless Alloy Steel Tube 4130

Ningbo Huijie Steel Pipe Manufacturing Co.,Ltd

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Ningbo Huijie Steel Pipe Manufacturing Co.,Ltd was Founded in 2002, the company mainly manufacturing seamless carbon steel tubes and alloy steel tubes, The products are mainly used in automobile, machinery, bearing, high pressure boiler and other industries. In 2011, our company built a new factory focusing on the production of bearing steel tubes,Which covers an area of 45000 ㎡, with capacity of 60,000 tons/year, equipment and environmental protection standards reach the advanced level of the domestic counterparts, has passed ISO/TS 16949 quality management system certification. The company has more than 500 employees, more than 80 professional technical personnel, the key process is equipped with PLC automatic temperature control perforation heating, spheroidizing annealing furnace, recrystallization annealing furnace, and a variety of supporting cold rolling, cold drawing processing lines. Equipped with advanced direct reading spectrum, metallographic analysis, hardness test and other physical and chemical testing equipments and eddy current, ultrasonic non-destructive testing equipments to reach the quality of products with superior assurance conditions. From 2018,Our annual production output about 75,000tons of bearing steel tubes and carbon steel tubes, By 2019, the group's steel pipe production capacity is expected to exceed 110,000 tons. Since 2018,Ningbo Huijie start for exporting through our own branch company Ningbo pipeway,Till now,we exported bearing steel tubes and Carbon steel pipes to Canada, USA, Mexico, Peru, Chile, Thailand, Malaysia, Russia, Iran, Germany, Spain, Netherland, Japan, South Korea Australia, etc about 12 countries.

Company Info

  • Company Name: Ningbo Huijie Steel Pipe Manufacturing Co.,Ltd
  • Representative: Mr.Kevin
  • Product/Service: Seamless Bearing Tubes , Mining Drill Pipes , Boiler Steel Tubes , Alloy Mechanical Tubing , Precision Steel tubes , Stainless Steel tubes
  • Capital (Million US $): 1.45
  • Year Established: 2002
  • Total Annual Sales Volume (Million US $): Above US$100 Million
  • Export Percentage: 11% - 20%
  • Total Annual Purchase Volume (Million US $): Above US$100 Million
  • No. of Production Lines: 50
  • No. of R&D Staff: 41 -50 People
  • No. of QC Staff: 51 -60 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 50,000-100,000 square meters
  • Factory Location: Industrial Park,Zhangting Town,Yuyao City,Ningbo City,Zhejiang Province,China
  • Contact Person: Mr. Kevin
  • Tel: 86-0574-87491308
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