17K Jumper Hose

17K hoses specifically refer to deep-sea oil and gas transport hoses that conform to the API 17K international standard and are mainly used in the field of marine engineering.

Technical Standards：API 17K certification is designed for deep-sea high-pressure environments, requiring hoses to have durability under extreme pressure (up to 600 MPa) and corrosive conditions. Letone Technology is the only company in China to hold triple certifications of API 7K, 16C, and 17K.
Product Advantages：It features high pressure, lightweight, and long service life, and its corrosion resistance is superior to traditional steel pipes, making it a viable alternative to steel pipes for deep-sea oil and gas transportation.

Production Equipment

120-meter oil hose production workshop
Large-diameter VP winding machine
Large-diameter double-disc winding machine
2000T Fenbo Button Press Machine
400MPA testing machine
400MPA testing machine
Impulse testing machine
Chemical Analysis Laboratory
Rubber Physical Properties Laboratory
Fire resistance testing machine

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Product Technical Solution - Spiral Steel Wire Tube Structure

Layer name	Material	Effect
a	UPE or PTFE (4.0mm thickness)	Wear-resistant, low-friction, and with good chemical stability
b	Synthetic rubber	Good toughness and impact resistance
c	Synthetic rubber	The buffer layer has multiple ventilation gaps and is equipped with ventilation function.
d	Polyester fiber weaving	Lightweight and high-strength, with extremely strong tensile strength.
e	High-strength, ultra-flexible copper-plated steel wire	High pressure resistance and corrosion resistance
f	Spring steel wire	It has strong bending and crush resistance, and also has a certain air venting function.
g	Synthetic rubber	Wear-resistant and weather-resistant
h	UPE (1.0mm thickness)	Resistant to ultraviolet radiation, aging, and seawater corrosion

Product Technical Solution - Armored Tube Structure

Layer name	Material	Effect
a	UPE or PTFE (4.0mm thickness)	Wear-resistant, low-friction, and with good chemical stability
b	Synthetic rubber	Good toughness and impact resistance
c	Synthetic rubber	The buffer layer has multiple ventilation gaps and is equipped with ventilation function.
d	Polyester fiber weaving	Lightweight and high-strength, with extremely strong tensile strength.
e	High-strength, ultra-flexible copper-plated steel wire	High pressure resistance and corrosion resistance
f	Synthetic rubber	Wear-resistant and weather-resistant
g	Stainless steel armor	Made of interlocking metal structure winding, it is wear-resistant and resistant to impact damage.

Hose Connector

The connector is made of 35CrMo high-strength alloy steel, forged as a single piece, and undergoes a rigorous heat treatment process to ensure a uniform and fine metallographic structure and excellent pressure resistance. High-precision CNC machine tools and machining centers ensure dimensional accuracy and product interchangeability. The hose assembly consists of a hose and end connectors mechanically crimped together using a double-layer sleeve structure. The crimped connector and hose provide a physical connection, offering stable anti-detachment and sealing. The crimped assembly features a buffer layer with multiple venting gaps in the rubber layer, effectively guiding gas to the connector pull-out section and venting it through the crimping grooves to the outside of the connector, preventing bulging of the hose.

Application Cases

China's first large fracturing vessel (Haiyang Shiyou 696) is equipped with key components such as ultra-long, ultra-high pressure acid fracturing hoses (4″-15000psi-92m), which can meet the new demands of large-scale fracturing operations in all sea areas of my country, batch fracturing operations of multiple wells at sea, as well as fracturing operations of gas wells and ultra-deep formations. It fills the gap in my country's offshore oilfield fracturing technology and engineering field and has important strategic significance.