Leading Carbon Steel Pipe Manufacturer in China Since 1998
TUSPIPE is a China ERW/HFW steel pipe manufacturer with a 500,000MT annual production capacity.
About Tianjin United Steel Pipe
Since 1998, Tianjin United Steel Pipe Co., Ltd (TUSPIPE) has been committed to supplying high-quality ERW/HFW carbon steel pipes.
The main products are API 5L Line Pipe, API 5CT Casing Pipe, and Tubing. And also, Tianjin United Steel Pipe Co., Ltd supplies slotted liner, compressor tubes, transmission shaft tubes, torque tubes, piling pipes, sprinkler pipes, boiler pipes, roller pipes, etc. Production standards include API SPEC 5CT, API SPEC 5L, JIS G 3444, JIS G 3452, ASTM A53/A53M, ASTM A135, ASTM A252, ASTM A500, ASTM A795, AS/NZS 1163, AS/NZS 1074, AS/NZS 1396, EN 10217, EN 10219, EN 10255, UL 852, FM 1630, GB/T 9711, GB/T 3091, GB/T 13793, GB/T 19830, YB/T 5209, and SY/T 5768.
PRODUCTION LINE & EQUIPMENT
Tianjin United Steel Pipe Co., Ltd (TUSPIPE) carries out a strict audit on suppliers, checking their production qualification and capacity to ensure that the quality control procedures of raw materials meet the requirements. In addition, the company also evaluates the suppliers every year and evaluates the past quality control, document control, delivery time, and other information to ensure that the suppliers meet our product quality requirements.
After receiving the hot-rolled coil of raw materials, the quality assurance department sends an inspector for visual inspection, to eliminate cracks, pits, and other defects on the surface of the coil to affect the subsequent production. In addition to visual inspection, the inspection personnel also takes samples from the coil plate for chemical composition analysis and mechanical experiment according to the standard requirements, and compare the inspection results with the data on the material quality certificate issued by the coil plate supplier. If the analysis results do not meet the requirements of the standard, the raw material will be returned to the supplier for replacement.
In order to ensure that our steel pipes meet the standard requirements, the quality engineers, on-site inspection personnel and front-line production workers need to make great efforts. In the production process, we will carry out the following inspection and test on the steel pipe according to the standard requirements:
Charpy Impact Test
Chemical Component Analysis
Drop-Weight Tear Test
Coating, Marking, and Packaging
After the steel pipe production is completed, Tianjin United Steel Pipe Co., Ltd (TUSPIPE) performs the surface coating of the steel pipe according to the customer’s requirements, to prevent corrosion. Standard coated with black paint, varnish, and anti-rust oil, these materials can play a temporary anti-rust effect in the process of transportation. If FBE, PE, or PP coatings are needed, the pipes will be transported and finished in a coating mill.
Tianjin United Steel Pipe Co., Ltd (TUSPIPE) sticks a bar code on the inner wall of each steel pipe, and the bar code is unique on the pipe end. The bar code is equivalent to the ID card of each unit under the steel pipe, which records the heat number, tube number, steel grade, and production information of each pipe. After finishing the coating process, the production workers scan the bar code to obtain the corresponding product information and mark pipes according to the standard and contract requirements to ensure the traceability of the product.
Generally speaking, the packaging of products plays a crucial role in protecting products during transportation, so the company is also very concerned about this process. According to the size, coating, and other processing information of steel pipe, the company usually uses end caps, PVC wrap, nylon sling, galvanized strip, fumigated wood, and other materials to protect the steel pipe. At the same time, the engineers can generate a customized packing scheme since some of our customers need more solid, stable, easy-to-unload packaging solutions.
Before delivering to the customers, the inspector re-checks the appearance, packaging, marking label, tag, and other specifications of the steel pipe to ensure that the customer will not receive any defective products. After passing the inspection, the quality assurance department of Tianjin United Steel Pipe Co., Ltd (TUSPIPE) issues a mill test certificate according to each batch of shipped products.
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