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{"title":"30CrMnSiA Steel Seamless Oil Well Pipe with Low Residual Hoop Stresses and High","imgUrl":"https:\/\/img.chinax.com\/nimg\/e1\/37\/b99460d191260300ebfc40e147f3-200x200-1\/30crmnsia_steel_seamless_oil_well_pipe_with_low_residual_hoop_stresses_and_high.jpg","attrs":{"Brand Name":"HONGBAO","Model Number":"HG-OP","Certification":"PED, ISO9001,DNV","Place of Origin":"China"}}
{"title":"90MM Outer Diameter Gr 4130 Chromium-Molybdenum Alloy Seamless Steel Pipe for","imgUrl":"https:\/\/img.chinax.com\/nimg\/58\/3a\/9a6ba1157dc89c0e53fd6f368dc1-200x200-1\/90mm_outer_diameter_gr_4130_chromium_molybdenum_alloy_seamless_steel_pipe_for_oil_well_drill_pipe_and_casing_tubing.jpg","attrs":{"Brand Name":"Hongbao","Model Number":"HBOWD-1","Certification":"ISO9001","Place of Origin":"China"}}
{"title":"4130 Steel Oil Well Pipe - Corrosion Resistant High Tensile Strength Precision","imgUrl":"https:\/\/img.chinax.com\/nimg\/01\/56\/266932f39f054cdb6dc750775efc-200x200-1\/4130_steel_oil_well_pipe_corrosion_resistant_high_tensile_strength_precision_engineered_for_oil_drilling.jpg","attrs":{"Brand Name":"HONGBAO","Model Number":"HG-OP","Certification":"PED, ISO900, DNV","Place of Origin":"China"}}
{"title":"DIN2391 Standard 42CrMo Steel Grade High-Tensile Strength Drill Rod Tube for Oil","imgUrl":"https:\/\/img.chinax.com\/nimg\/c5\/09\/cb9bf38b0771957a67c4eedf2aa7-200x200-1\/din2391_standard_42crmo_steel_grade_high_tensile_strength_drill_rod_tube_for_oil_drilling_pipe_and_core_barrel.jpg","attrs":{"Brand Name":"HONGBAO","Model Number":"HG-OP","Certification":"PED, ISO9001,DNV","Place of Origin":"China"}}
{"title":"30CrMnSiA Grade Seamless Steel Oil Well Pipe for High-Pressure Drilling with","imgUrl":"https:\/\/img.chinax.com\/nimg\/02\/31\/9e41304014a068b85add7e2e2534-200x200-1\/30crmnsia_grade_seamless_steel_oil_well_pipe_for_high_pressure_drilling_with_corrosion_resistance.jpg","attrs":{"Brand Name":"HONGBAO","Model Number":"HG-OP","Certification":"PED, ISO9001,DNV","Place of Origin":"China"}}
{"title":"30CrMnSiA Grade Corrosion Resistant High Strength Oil Well Pipe and Seamless","imgUrl":"https:\/\/img.chinax.com\/nimg\/74\/cc\/12a28b9f38ec46e6d52dce2f0130-200x200-1\/30crmnsia_grade_corrosion_resistant_high_strength_oil_well_pipe_and_seamless_steel_drilling_rod_tube.jpg","attrs":{"Brand Name":"HONGBAO","Model Number":"HG-OP","Certification":"PED, ISO9001,DNV","Place of Origin":"China"}}
Engineered for medium-high pressure, weakly corrosive, and dynamic-loading well environments, 30CrMnSiA grade drilling pipe delivers exceptional strength, corrosion resistance, and weldability — making it the reliable choice for challenging oilfield applications.
Key Features & Benefits
High Strength - Tensile strength ≥850 MPa - Outperforms standard carbon steels, ensuring reliable performance in high-pressure wells (35-50 MPa) and critical structural applications.
Corrosion Resistance - 0.80-1.10% Chromium - Forms a protective oxide layer to resist brine, CO₂, and weakly acidic fluids, surpassing non-alloy carbon steels in moderately corrosive environments.
Balanced Toughness - Elongation ≥14% - Absorbs dynamic loads from drill bit vibrations and pressure pulses, minimizing crack propagation and extending service life.
Lightweight & Efficient - Lighter than 4140 steel - Reduces tripping loads in deep/extended-reach wells without sacrificing strength.
Why Choose 30CrMnSiA?
Better Than 1541 - Superior corrosion resistance for moderately corrosive wells such as injection and offshore applications.
Cost-Effective Alternative to 4140/4130 - Delivers high strength (near 4130) and weldability at a lower alloy cost than premium grades.
Versatile Performance - Ideal for weld-intensive operations, dynamic-loading wells, and corrosion-sensitive environments.
For extreme pressures, choose 4140; for shallow/budget wells, consider 1541.
Applications
Applications include fore poling (advance support), mine blasting, water well drilling, geothermal well drilling, and coal/nonferrous metal mining.
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...
