About Tianjin Baolai Steel Pipe Co., Ltd. - Steel Pipes Supplier in China

Tianjin, China is the base for Tianjin Baolai Steel Pipe Co., Ltd., an imported supplier listed with ten active products that fall under the steel tubes and steel pipes categories. The company is classified in the harbor trust tier and offers a catalogue that spans hollow sections, rectangular and square tubes, as well as various pipe forms. All items are identified by their HS‑code families, primarily in the 7304 and 7306 series which cover steel pipes and tubes. The product list reflects a focus on carbon steel constructions, both plain and hot‑dip galvanized, suitable for structural and mechanical applications.

The catalogue includes a Hollow Section RHS SHS, a Square Steel Tube, a Black Steel Tube and a Galvanized Rectangular Steel Tube without specific HS codes listed. Barbon Steel Round Pipe is recorded under HS 7306.30 and uses Carbon Steel conforming to ASTM A500 Grade B/C. Carbon Rectangular Steel Tube carries HS 7306.61 and is made from Carbon Steel grades Q235B, Q345B, S235JR or S275JR. Seamless Steel Pipe appears under HS 7304.31 with Carbon Steel meeting ASTM A500 Grade A/B/C. A generic Steel Tube is also listed under HS 7306.30, composed of mild carbon steel limited to 0.26 % C and 1.35 % Mn. Finally, Galvanized Steel Tube and Galvanized Steel Square Tube share HS 7306.30 and are produced by hot‑dip galvanising with zinc coating grades G30‑G90 on carbon steel bases such as Q235B or Q345B.

Product Range and Specialties of Tianjin Baolai Steel Pipe Co., Ltd.

The product portfolio centres on carbon‑steel hollow sections and tubes that are commonly supplied to meet EN 10210 (hot‑finished structural steel tubes) and ASTM A500 specifications. Typical dimensions for RHS and SHS range from 48 mm to 300 mm depth with tolerances of ±1 % on wall thickness, while square and rectangular tubes are offered in standard widths from 20 mm up to 200 mm. Black steel tubes are usually delivered plain, with surface roughness Ra ≤ 3.2 µm, whereas the galvanized variants are coated to meet G30‑G90 zinc deposition, providing corrosion resistance equivalent to a 0.1 mm zinc layer. Seamless pipes often adhere to ASTM A53 or API 5L grades, with pressure ratings up to 16 MPa for low‑pressure service.

Trade and Export Information - Tianjin Baolai Steel Pipe Co., Ltd.

Chinese steel exporters typically ship RHS, SHS and tube products to markets in the Middle East, Southeast Asia, Eastern Europe and Africa, where construction and infrastructure projects drive demand. The HS‑code 7304 series (seamless pipes) and 7306 series (tubes) are routinely inspected under the Chinese General Administration of Customs and may require a Certificate of Origin and a quality inspection report for customs clearance in the destination country. Buyers usually request ISO 9001 certification, CE marking for EU markets, and where applicable API 5L compliance for oil‑and‑gas pipelines. Standard export packaging includes bundled lengths on wooden pallets, protected by shrink‑wrap, and loaded in 20 ft or 40 ft containers under FOB Tianjin or CIF destination terms.

Sourcing from Tianjin Baolai Steel Pipe Co., Ltd. - Buyer Guidance

When sourcing from Tianjin Baolai, request the Mill Test Report (MTR) and a material certificate that reference the specific ASTM or EN grade cited in the catalogue. Verify coating thickness for galvanized items using a magnetic thickness gauge and confirm that the zinc deposit matches the stated G30‑G90 range. Ensure that packaging details, such as pallet dimensions and bundle lengths, are aligned with container loading plans to avoid freight inefficiencies. It is advisable to ask for a third‑party inspection report, especially for seamless pipe orders that may be subject to pressure‑rating verification.

What steel grades are offered for the Barbon Steel Round Pipe?

The Barbon Steel Round Pipe is supplied as carbon steel conforming to ASTM A500 Grade B or Grade C, and is listed under HS code 7306.30.

Which HS codes apply to the Seamless Steel Pipe?

Seamless Steel Pipe is classified under HS code 7304.31 and is manufactured from carbon steel meeting ASTM A500 Grade A, B or C.

What coating specifications are used for the Galvanized Steel Tube?

The Galvanized Steel Tube is hot‑dip galvanized with zinc coating grades ranging from G30 to G90, providing a minimum zinc deposit of approximately 0.1 mm.

Are Mill Test Reports available for the Carbon Rectangular Steel Tube?

Yes, the supplier can provide Mill Test Reports that detail the chemical composition of the Q235B, Q345B, S235JR or S275JR grades used in the Carbon Rectangular Steel Tube, which is listed under HS code 7306.61.

What packaging format is used for the Square Steel Tube shipments?

Square Steel Tubes are typically bundled in standard lengths, placed on wooden pallets, shrink‑wrapped, and loaded into 20 ft or 40 ft containers for export.

Which certifications should a buyer verify before purchasing steel pipes from this supplier?

Buyers should confirm ISO 9001 quality management certification and, for pipelines, verify compliance with API 5L or relevant EN standards depending on the target market.

What are the typical lead times for orders of Galvanized Steel Square Tube?

Lead times generally range from 15 to 30 days after order confirmation, depending on the required dimensions and coating thickness.

Can the supplier provide custom dimensions for the Hollow Section RHS SHS?

Custom dimensions are possible within the EN 10210 tolerance framework; buyers should specify depth, width and wall thickness in the purchase request.