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Products & services

Hilong Super High Torque Connection

Product Introduction

HLST®& HLIST®are new generation super high torque double shoulder connection developed based on the structure of HLIDS®
HLST®& HLIST®are more suitable used in deep well drilling, ERD, HDD, sour service and critical well etc.
Comparing with API connection, HLST®& HLIST®have the features as follows:
• Improved double shoulder structure
• Improved thread root radius designation
• Optimized thread pitch and taper

 Product Advantage

·Super High Torsional Strength: 70% extra torsional strength over API connection;
·Increased anti-fatigue performance;.

· While maintaining required torsional strength, it can:
- minimize the tool joint OD;
- maximize the ID;

·Reduced the internal erosion and improved hydraulic efficiency.

 
Product Specification

(a)HLST®series including HLST®24, HLST®26, HLST®31, HLST®36, HLST®39, HLST®40, HLST®46, HLST®52, HLST®54, HLST®57, HLST®66 and etc.
(b)HLST®connection performance, please see table A.7 or table B.7.

(c)HLIST® series including HLIST®38, HLIST®39, HLIST®46, HLIST®50, HLIST®54, HLIST®57 and etc.
(d)HLIST®connection performance, please see table A.8 or Atable B.8.

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