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{"title":"DIN2391 Standard 1541 Steel Grade Seamless Steel Tube Drill Rod for Oil Well","imgUrl":"https:\/\/img.chinax.com\/nimg\/b1\/3e\/245e211a71e5af9f12f380e17a74-200x200-1\/din2391_standard_1541_steel_grade_seamless_steel_tube_drill_rod_for_oil_well_drilling_with_cold_rolling_processing.jpg","attrs":{"Brand Name":"HONGBAO","Model Number":"HG-OP","Certification":"PED, ISO9001, DNV","Place of Origin":"China"}}
{"title":"EN10305-1 Standard 45MnMoB Grade Seamless Steel Oil Well Drill Pipe with 30-139","imgUrl":"https:\/\/img.chinax.com\/nimg\/a8\/6e\/367b84f703eb04aa7894bf699915-200x200-1\/en10305_1_standard_45mnmob_grade_seamless_steel_oil_well_drill_pipe_with_30_139_7mm_od_range.jpg","attrs":{"Brand Name":"HONGBAO","Model Number":"HG-OP","Certification":"PED, ISO9001, DNV","Place of Origin":"China"}}
{"title":"ASTM A519 4130 Oil Well Drilling Pipe with High Strength-to-Weight Ratio and","imgUrl":"https:\/\/img.chinax.com\/nimg\/41\/76\/f1a2c208d2ab47244015529fb980-200x200-1\/astm_a519_4130_oil_well_drilling_pipe_with_high_strength_to_weight_ratio_and_exceptional_toughness.jpg","attrs":{"Brand Name":"Hongbao","Model Number":"HBOWD-7","Certification":"ISO9001","Place of Origin":"China"}}
{"title":"30CrMo Seamless Oil Well Drilling Pipe with Superior Mechanical Properties, High","imgUrl":"https:\/\/img.chinax.com\/nimg\/b5\/c9\/206b44da91df218f7efa56602400-200x200-1\/30crmo_seamless_oil_well_drilling_pipe_with_superior_mechanical_properties_2c_high_tensile_strength_2c_and_corrosion_resistance.jpg","attrs":{"Brand Name":"Hongbao","Model Number":"HBOWD-2","Certification":"ISO9001","Place of Origin":"China"}}
{"title":"4140 Seamless Steel Oil Well Drilling Pipe with High Straightness and Quenched &","imgUrl":"https:\/\/img.chinax.com\/nimg\/63\/9e\/2056f4f095d39d45637e2fb2993a-200x200-1\/4140_seamless_steel_oil_well_drilling_pipe_with_high_straightness_and_quenched_26_tempered_for_durability.jpg","attrs":{"Brand Name":"HONGBAO","Model Number":"HG-OP","Certification":"PED, ISO9001,DNV","Place of Origin":"China"}}
Oilfield 45MnMoB Core Tubes For Geological Drilling Rods
Oilfield 45MnMoB Core Tubes for Geological Drilling Rods
Engineered for excellence in demanding geological exploration, our 45MnMoB Core Tubes are precision-manufactured high-strength alloy steel tubes designed exclusively for integration with geological drilling rods. As a critical component in core sampling systems, these tubes safeguard the integrity of rock and soil samples during deep-well drilling, ensuring accurate data collection for oilfield exploration, mineral resource assessment, and hydrogeological surveys.
Crafted from 45MnMoB low-alloy structural steel, a material renowned for its exceptional mechanical properties, the core tubes deliver unmatched performance in harsh downhole environments. The alloy's optimized composition—blending manganese (Mn), molybdenum (Mo), and boron (B)—endows the tubes with superior tensile strength (≥790 MPa), high yield strength (≥600 MPa), and outstanding wear resistance. These attributes enable the tubes to withstand extreme axial loads, abrasive rock formations, and cyclic stress encountered in deep drilling operations, minimizing deformation and extending service life.
Key Features
Enhanced Corrosion Resistance: A specialized heat treatment process (quenching + tempering) forms a dense oxide layer on the surface, protecting against corrosive fluids (e.g., saline water, acidic mud) common in oilfield wells.
Precision Machining: Strict adherence to API 5CT and ISO standards ensures tight dimensional tolerances (outer diameter ±0.1mm, wall thickness ±0.05mm) and smooth inner surfaces (Ra ≤1.6μm), reducing friction during sample retrieval and preventing core damage.
Leak-Proof Design: Seamless construction and advanced welding techniques eliminate weak points, guaranteeing zero fluid ingress that could contaminate samples or compromise drilling efficiency.
Versatile Compatibility: Available in standard sizes (OD: 73-127mm, length: 1-6m) and customizable configurations (e.g., threaded ends per customer specs), seamlessly integrating with most geological drilling rod assemblies.
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)
Frequently Asked Questions
1. 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.
2. How about your production capacity?
3000 tons/Month.
3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.
4. Where is your factory?
Zhangjiagang city, 1.5 hours away from Shanghai.
5. 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:
1). Tube Standard
2). Steel Grade
3). Tube Size and Size Tolerance
4). Tube length
5). Quantity
6). If any special requirements
6. How about the minimum order quantity?
Normally for one size above 1 ton.
Welcome to contact us! Thanks.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
1958
Total Annual:
>76000000
Employee Number:
700~1000
Ecer Certification：
Verified Supplier
Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is speciali... Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is speciali...
