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4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
Specifications
Brand Name :
Hongruntong Marine
Model Number :
HM-RDH014
Certification :
ABS, DNV, RMRS, CCS, LR, BV, SGS, V-Trust
Place of Origin :
China
MOQ :
1
Price :
$18-$130
Payment Terms :
L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability :
1850 Pcs Per Month
Delivery Time :
5-7 Work Days
Packaging Details :
Wooden Pallets, Wooden Box
Product Name :
Rotary Drilling Hose
Material :
Natural Rubber
Reinforcement :
High Tensile Steel Wire
Cover :
High Quality Synthetic Rubber
Working Pressure :
35 Mpa - 75 Mpa
Connnection type :
Hammer Union / Flange
Color :
Black
Machine Type :
Drilling Equipment
Application :
Petroleum Base Hydraulic Fluids
Warranty :
3 Years
Description
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure
Product Overview

4 Inch High Pressure Rotary Hose Flame Retardant Abrasion Proof Ultra Flexible

Rotary Drilling Hose Product Introduction

This API 7K certified rotary hose is engineered for high-performance deep well drilling operations. It handles high volumes of abrasive drilling mud under extreme pressure, maintaining integrity under constant flexing and vibration.

With a nitrile rubber inner tube and ozone-resistant synthetic rubber cover, it offers excellent oil resistance, making it ideal for onshore and offshore environments.

Case Study: A land-based drilling site in Texas encountered hose failures every 3-4 months due to mud contamination and cracking. They replaced their standard hoses with API 7K rotary drilling hoses equipped with dual spiral steel reinforcement. The new hoses remained in service for over 14 months, improving productivity and saving over $20,000 in replacement costs annually.
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs 4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
Specifications
Tube Modified nitrile, black, specifically engineered for the effective handling of abrasive, corrosive substances, and oil drilling mud.
Reinforcement Composite construction featuring multiple layers of textile fabric and steel cable, with a layer of rubber positioned between the cable layers for enhanced performance.
Cover Black modified nitrile with a specially engineered ultra-abrasion cover, designed to provide exceptional resistance to abrasion, corrosion, cutting, gouging, oil, and weather conditions.
Coupling Swaged couplings, full range of couplings are available, such as hammer union, flanges, hubs, male thread etc.
Certification API 7K-0376/ISO14693
Temperature -40°C to +82°C (-104°F to +180°F)
Options Accessories such as safety clamps and hose lift eyes are available upon request.
Test Each hose is tested at 22500psi for 15 minutes. Pressure test graph, test certificate and letter of conformance are issued for each hose.
Product Models & Specifications
Model I.D. (inch) I.D. (mm) O.D. (mm) W.P. mpa(psi) T.P. mpa(psi) Weight (kg/m) B.R. (mm)
HMRDH-Grade A 1 1/2 38 51 11(1500) 22(3000) 2.19 560
HMRDH-Grade A 2 51 65 11(1500) 22(3000) 3.03 900
HMRDH-Grade A 2 1/2 64 78 11(1500) 22(3000) 3.95 1200
HMRDH-Grade B 1 1/2 38 52 14(2000) 28(4000) 2.39 560
HMRDH-Grade B 2 51 66 14(2000) 28(4000) 3.25 900
HMRDH-Grade B 2 1/2 64 79 14(2000) 28(4000) 4.37 1200
HMRDH-Grade B 3 76 98 14(2000) 28(4000) 7.76 1200
HMRDH-Grade B 3 1/2 89 113 14(2000) 28(4000) 9.95 1300
HMRDH-Grade B 4 102 127 14(2000) 28(4000) 12.43 1400
HMRDH-Grade B 5 127 153 14(2000) 28(4000) 15.25 1500
HMRDH-Grade B 6 152 178 14(2000) 28(4000) 18.71 1600
HMRDH-Grade C 1 1/2 38 55 28(4000) 56(8000) 3.65 560
HMRDH-Grade C 2 51 69 28(4000) 56(8000) 5.15 900
HMRDH-Grade C 2 1/2 64 88 28(4000) 56(8000) 7.86 1200
HMRDH-Grade C 3 76 105 28(4000) 56(8000) 13.12 1200
HMRDH-Grade C 3 1/2 89 121 28(4000) 56(8000) 16.79 1300
HMRDH-Grade C 4 102 137 28(4000) 56(8000) 21.70 1400
HMRDH-Grade C 5 127 164 28(4000) 56(8000) 28.46 1500
HMRDH-Grade C 6 152 197 28(4000) 56(8000) 44.64 1600
HMRDH-Grade D 2 51 73 35(5000) 70(10000) 6.46 900
HMRDH-Grade D 2 1/2 64 91 35(5000) 70(10000) 10.75 1200
HMRDH-Grade D 3 76 107 35(5000) 70(10000) 14.35 1200
HMRDH-Grade D 3 1/2 89 123 35(5000) 70(10000) 18.77 1300
HMRDH-Grade D 4 102 139 35(5000) 70(10000) 23.16 1400
HMRDH-Grade D 5 127 171 35(5000) 70(10000) 38.00 1500
HMRDH-Grade D 6 152 200 35(5000) 70(10000) 48.43 1600
HMRDH-Grade E 2 51 80 52(7500) 104(15000) 10.37 1000
HMRDH-Grade E 2 1/2 64 101 52(7500) 104(15000) 17.88 1200
HMRDH-Grade E 3 76 120 52(7500) 104(15000) 24.45 1200
HMRDH-Grade E 3 1/2 89 135 52(7500) 104(15000) 29.33 1300
HMRDH-Grade E 4 102 148 52(7500) 104(15000) 34.24 1400
HMRDH-Grade E 5 127 189 52(7500) 104(15000) 55.39 1500
HMRDH-Grade F 2 51 82 70(10000) 105(15000) 11.81 1000
HMRDH-Grade F 2 1/2 64 104 70(10000) 105(15000) 20.46 1300
HMRDH-Grade F 3 76 129 70(10000) 105(15000) 32.74 1300
HMRDH-Grade F 3 1/2 89 144 70(10000) 105(15000) 39.43 1400
HMRDH-Grade F 4 102 158 70(10000) 105(15000) 45.73 1500
HMRDH-Grade G 2 51 92 105(15000) 157(22500) 17.37 1000
Key Features
High Vibration Tolerance

Designed to absorb shock and vibration from rotating equipment without compromising hose integrity.

Low Volumetric Expansion

Maintains consistent internal diameter under pressure for precise mud flow and pump calibration.

Leak Proof Connections

Equipped with high-quality hammer unions or flanged ends to ensure tight, secure fittings.

UV and Ozone Resistant

Outer cover is resistant to weathering, extending service life in outdoor rig environments.

Engineered for the Toughest Applications
  • Water Well Drilling: Transports water-based mud and prevents collapse in aquifer drilling.
  • Mining Mineral Exploration: Used in core drilling rigs for mineral sampling and blast hole drilling.
  • Horizontal Directional Drilling (HDD): Flexible design accommodates tight bends in trenchless pipeline installations.
What Sets Us Apart
  • Fast Response Technical Support: Our engineers provide quick guidance on product selection, troubleshooting, and installation best practices.
  • OEM Private Label Available: We offer branding and packaging services for distributors and equipment manufacturers worldwide.
  • Reliable Supply Chain for Raw Materials: Long-term partnerships with certified suppliers ensure stable quality and delivery timelines.
  • Comprehensive After Sales Service: We provide installation guidance, maintenance instructions, and post-shipment support to minimize downtime.
Frequently Asked Questions
Q: Can the hoses handle high temperatures?
A: Yes, our hoses operate in temperatures ranging from -40°C to +120°C, with high-temp models up to +150°C.
Q: What is the minimum bending radius of your hose?
A: It varies by size and model, but our hoses are designed for excellent flexibility and anti-kinking.
Q: Are the hoses resistant to H₂S and acid-based fluids?
A: Yes, we offer H₂S-resistant and acid-proof inner tube options for sour gas drilling environments.
Q: What type of reinforcement is used?
A: We use multiple layers of high-tensile steel wire for strength, durability, and pressure resistance.
Product Images
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs 4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs 4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs

4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs

4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs

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4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs

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Product Detail
Brand Name :
Hongruntong Marine
Model Number :
HM-RDH014
Certification :
ABS, DNV, RMRS, CCS, LR, BV, SGS, V-Trust
Place of Origin :
China
MOQ :
1
Price :
$18-$130
Contact Supplier
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs
4 Inch API 7K Rotary Drilling Hose 35-75 Mpa High Pressure for Drilling Rigs

Hongruntong Marine (Beijing) Co., Ltd

Verified Supplier
1 Years
beijing, beijing
Since 1990
Business Type :
Manufacturer
Main Products :
Dredge Hose, Dredging Rubber Hose, Discharge Hose Pipe
Total Annual :
7000000-1100000
Employee Number :
300~500
Certification Level :
Verified Supplier
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