What is the price of API 7K rotary drilling hose?

 API 7K Rotary Drilling Hose

API 7K rotary drilling hoses are special flexible pipes dedicated to the oil and gas extraction industry, which strictly comply with the international standard API Specification 7K issued by the American Petroleum Institute. As the core high-pressure conveying components in oil and gas drilling, cementing and workover operations, they are often classified as mandatory access equipment in global oil and gas projects.

Execution Standard

All products strictly follow the 6th edition of API Specification 7K released in 2015. Some models are also certified by the American Bureau of Shipping (ABS), fully meeting the mandatory safety and performance requirements of international oil and gas projects.

Typical Structural Configuration

• Inner Tube: Made of NR&SBR synthetic rubber, HNBR, UPE or PTFE materials, to meet different demands for oil resistance, wear resistance and corrosion protection
• Reinforcement Layer: Consists of 2 to 6 layers of wound high-tensile super-flexible steel wires or steel cables, with a maximum working pressure up to 15000psi
• Outer Layer: Made of abrasion-resistant and weather-resistant synthetic rubber, and special models for harsh working conditions are equipped with additional stainless steel armor protection

Temperature Range

Standard models are applicable for the temperature range from -20°C to +121°C. Customized special versions can extend the temperature range to -40°C to +160°C, adapting to extreme operating environments on land and offshore.

Core Application Scenarios

These hoses are mainly installed as flexible connecting components between the upper end of the standpipe and the top drive/swivel, as well as between the mud pump and the lower end of the standpipe. Under high-pressure working conditions, they convey media such as water-based mud and oil-based mud, while compensating for displacement and absorbing equipment vibration to achieve shock absorption effects. They are also compatible with special operation links such as cementing, acidizing and fracturing.

Main Pressure Grade Parameters

This product series covers the full pressure range from Grade A to Grade G, with core parameters as follows:

The products adopt equal-diameter design, with larger flow diameter and smaller medium flow resistance than ordinary hoses. Their service life is about 25% longer than that of common wound hoses, and they also feature lightweight characteristics for easier installation and operation.

Current Market Reference

The ex-factory quotation range of mainstream compliant domestic manufacturers is about 9.9 CNY to 500 CNY per meter, floating according to different pressure grades, material configurations and length specifications. The export quotation of similar overseas products ranges from 8.6 USD to 1000 USD per meter. Leading domestic manufacturers have obtained full API system certification, and their products can directly meet the bidding requirements of various global oil and gas projects.