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4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
Specifications
Brand Name :
HONGBAO
Model Number :
HG-OP
Certification :
PED, ISO9001,DNV
Place of Origin :
China
MOQ :
1MT
Price :
Negotiable
Payment Terms :
L/C,T/T
Supply Ability :
3000MT/Month
Delivery Time :
Negotiable
Packaging Details :
As required
Steel Grade :
30CrMo
Execution Standard :
ASTM A519, DIN2391, EN10305-1
OD Range :
30-139.7mm
WT Range :
3-19mm
Description
4130 SR Wire Line Seamless Drill Pipes NQ HQ Drill Inner Tubes
4130 SR Wire Line Seamless Drill Tubes (NQ/HQ Drill Inner Pipes) are stress-relieved 4130 steel seamless tubes designed for wireline coring in geological exploration. Featuring high tensile strength (≥810 MPa) and toughness after heat treatment, they ensure durability in hard rock formations. Precision-machined with tight tolerances (OD ±0.15mm, straightness ≤0.5mm/m) and smooth inner surfaces (Ra ≤1.6μm), they minimize friction during wireline retrieval. Compatible with NQ (69.9mm OD) and HQ (88.9mm OD) core barrels, they offer robust thread connections (e.g., API standard) for secure assembly, optional nitriding coating for corrosion resistance, and reliability in deep-hole drilling up to 1500m. Ideal for mineral exploration and core sampling.
Chemical Composition
Steel Grade C Si Mn P S Cr Mo B
4130 0.28-0.33 0.15-0.35 0.40-0.60 ≤0.040 ≤0.040 0.80-1.10 0.15-0.25
4140 0.38-0.43 0.15-0.35 0.75-1.00 ≤0.040 ≤0.040 0.80-1.10 0.15-0.25
45MnMoB 0.43-0.48 0.17-0.37 1.05-1.35 ≤0.020 ≤0.015 0.20-0.25 0.001-0.005
1541 0.36-0.44 - 1.35-1.65 ≤0.040 ≤0.050
30CrMnSiA 0.28-0.34 0.90-1.20 0.80-1.10 ≤0.020 ≤0.015 0.80-1.10
Mechanical Properties
Steel Grade Deliver Condition Tensile Strength (Mpa) Yield Strength (Mpa) Elongation (%) Hardness (HRC)
4130 + SR ≥813 ≥690 ≥15% ≥24
4140 QT ≥950 ≥850 ≥14% 28 - 33
45MnMoB + N ≥790 ≥600 ≥14% -
1541 + SR ≥813 ≥690 ≥15% ≥24
30CrMnSiA QT ≥850 ≥750 ≥14% 26 - 31
Delivery Condition
  • Stress Relief Annealing after Cold Working (+SR) (BKS)
  • Normalizing (+N) (NBK)
  • Quenching & Tempering (QT)
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
Frequently Asked Questions
Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to check tube quality. You need to in charge of Express costs.
How about your production capacity?
3000 tons/Month.
What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.
Where is your factory?
Zhangjiagang city, 1.5 hours away from Shanghai.
How can I get the quotation A.S.A.P?
Please send us an inquiry with full details as following, quotation will sent to you A.S.A.P:
  • Tube Standard
  • Steel Grade
  • Tube Size and Size Tolerance
  • Tube length
  • Quantity
  • If any special requirements
How about the minimum order quantity?
Normally for one size above 1 ton.
Welcome to contact us! Thanks.
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4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring

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Product Detail
Brand Name :
HONGBAO
Model Number :
HG-OP
Certification :
PED, ISO9001,DNV
Place of Origin :
China
MOQ :
1MT
Price :
Negotiable
Contact Supplier
video
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring
4130 Steel Stress Relieved Seamless Drill Pipe with High Tensile Strength for Wire Line Coring

Jiangsu Hongbao Group Co., Ltd.

Verified Supplier
9 Years
jiangsu
Since 1958
Business Type :
Manufacturer
Main Products :
Welded Steel Tube, Precision Steel Tube, Hollow Steel Tube
Total Annual :
>76000000
Employee Number :
700~1000
Certification Level :
Verified Supplier
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