API 7K Grade E Rotary Drilling Hose: 3-1/2″ ID x 75 FT High Pressure Line with Butt Weld Connections
Shanghai PME Industrial provides reliable, high-pressure fluid transfer solutions with our premium API 7K Grade E Rotary Hose assemblies. Purpose-built to handle heavy mud circulation, this 3.5 Inch Rotary Vibrator Hose forms the critical flexible connection between the mud manifold standpipe and the top drive or swivel system. It is engineered to withstand continuous high-pressure pulsations and standard drilling fluids encountered in oilfield operations.
In demanding drilling fields, flowlines face intense mechanical stress, vibration, and inner liner abrasion from high-velocity mud. To secure the end connections under these working pressures, our 7500 PSI Drilling Hose features heavy-duty 4-inch FIG 1002 Female Subs attached via precise, robust butt weld interfaces. Furthermore, to address rig safety protocols and prevent accidental whipping or handling risks, as customer request, 75 ft assembly can come fully equipped out of the factory with dedicated lifting collars, safety clamps, and high-tensile safety chains complete with shackles on each end.
3-1/2″ x 75 FT 7500 PSI Grade E Rotary Hose
API 7K Hose Body Marking
Secure Export Packaging
Why Choose PME Flowlines? Product Comparison & Practical Advantages
Selecting the right high-pressure mud hose requires a clear look at working criteria, safety ratings, and connection types. Here is how our FIG 1002 Hammer Union Hose fits into standard oilfield applications compared to alternative options:
1. API Grade E (7500 PSI) vs. API Grade D (5000 PSI) Hoses: Standard Grade D hoses are limited to a 5,000 PSI working pressure boundary. For modern operations that encounter higher pressure parameters, upgrading to our Grade E hose provides a 7,500 PSI working pressure and an 11,250 PSI factory test pressure. This higher rating offers a safer operating cushion and better resistance to pressure surges during deep well drilling.
2. Welded Quality Control vs. Non-Standard Connections: End connections on high-pressure hoses must be robust. PME utilizes proper industrial welding procedures to join the 4″ FIG 1002 Female Subs via butt welds to the hose fittings. This standard-compliant welding process ensures reliable mechanical strength, consistent structural integrity, and full pressure containment at the joint interfaces under specified working conditions.
3. Complete Safety Hardware Integration vs. Basic Bare Hoses: Buying bare hoses forces operators to source and install separate safety restraints in the field, which can lead to sizing mismatches. PME assemblies come as a complete turn-key package out of the factory. The lifting collars, safety clamps, and safety chains with shackles are perfectly sized and pre-fitted to the hose, saving assembly time on site and reinforcing workplace safety straight out of the box.
Technical Specifications
| Design Standard | API Spec 7K Compliant / Grade E |
| Hose Size & Length | 3-1/2 Inch ID x 75 Feet |
| Working & Test Pressure | 7,500 PSI WP / 11,250 PSI Factory Test Pressure |
| End Connection Style | 4″ FIG 1002 Female Sub with Butt Weld Interface |
| Safety Accessories Included | Lifting Collars, Safety Clamps & Chains with Shackles |
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