At 1:00 a.m., a large domestic oil pipe factory is still bright, and the laser welding equipment of high alloy coiled tubing pilot test platform built by HGTECH is in trial production, and the first 4000m high-power continuous laser welding of oil pipe in China will be completed here.

High alloy coiled tubing is one of the most important high-end pipe materials for oil and gas field exploitation in China. The laser welding technology of duplex stainless steel used in this field has yet to be broken through in China, so that the related products have to be imported for a long time. Although it is the first time to enter the oil coiled tubing high power laser welding market, HGTECH is not “stage fright”. It has continuously overcome many problems such as large diameter, high wall thickness, long time, continuous high power laser welding, etc., to achieve the market breakthrough of shaped welded pipe line in the oil industry. The current power of the equipment is the highest in China, which provides a more powerful guarantee for the exploration and development of oil and gas fields.

Process commissioning is the most critical link in the implementation of the whole project. If there is a problem at the last 1m, the whole steel pipe will be scrapped, so the equipment needs to ensure 24-hour continuous and stable production. During the commissioning process, the equipment had oxidation on the weld surface. After repeated study and judgment by the process engineer, it was determined that the protection device did not match. The team quickly brainstormed and discussed solutions. The next night, they got new parts and components, and solved the problem efficiently. Due to the lack of any reference technology at home and abroad, a variety of problems have never been encountered. The project team meets the difficulties, deeply understands the needs of customers, follows strict construction operation standards, and completes process commissioning with high quality.

“Real gold” can withstand fire refining. In the trial production stage, after 16 or 7 hours of continuous operation of the equipment, the first plate of high alloy metal tube was successfully put off the production line. Subsequently, a series of strict quality tests, including flattening test, flaring test, 8 hours of high-strength water pressure strength test, as well as metallography and corrosion resistance test, all the indicators of the product reached The equipment passed the acceptance test successfully

At present, the stainless steel pipe produced by HGTECH laser welding equipment has been successfully put into the well in the oil field, and has brought nearly ten million new orders to customers. 

No matter how the external situation changes, innovation first is the original intention of HGTECH.