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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.