Carbon Steel Pipe Q345B 6 inch Sch 40
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Carbon Steel Pipe Q345B 6 inch Sch 40
Shaanxi Shuncheng Tian Steel Co., Ltd. supplies 6 inch Schedule 40 carbon steel pipe in Q345B grade for utility piping, plant services and structural fabrication. The 168.3 mm outside diameter with a 7.11 mm wall gives a higher load capacity than mild steel grades of the same size, which suits moderately stressed lines, machine frames and general engineering work. Pipe is available with a black, varnished or coated finish.
Specifications
| Grade | Q345B |
| Standard | GB/T 3091; other grades and standards available on request |
| Outside diameter | 6 in / 168.3 mm |
| Wall thickness | Schedule 40 / 7.11 mm |
| Nominal weight | Approx. 28.26 kg per metre |
| Length | Supplied in 6 m or 12 m; custom cut lengths available |
| Ends | Plain end, beveled or threaded with couplings |
| Surface | Black mill finish, varnished or oiled; painted or galvanized on request |
| Packaging | Steel strapped bundles, or per buyer requirement |
| Documents | Mill test certificate available per order |
Typical Applications
Typical orders for this Q345B 6 inch Sch 40 pipe cover process water and cooling lines, compressed air headers, structural bracing and fabricated frames. Q345B is a low-alloy structural steel with higher yield strength than Q235B, so it is specified where the same pipe diameter has to carry more load or span a longer unsupported length. It remains readily weldable under normal fabrication practice, and pipe can be supplied in fixed or random lengths with the end finish, coating and marking matched to the project specification.
Request a Quotation
Send us your quantity, length, end finish, coating and destination port, and our team will confirm availability against current mill stock. Browse the wider carbon steel pipe range, or contact us for a quotation.
Related Reading
Estimating tonnage before you place an order? Our guide to pipe weight per meter sets out the annulus formula, a worked 6 inch Schedule 40 carbon steel example and the stainless steel correction factor, so you can convert a length list into the exact tonnage a container will carry.
HONOR
Our company has passed ISO9001 quality management system certification, Our Mill product with CE/EN10204 / ASTM/Classification society certificate/CASO etc. We welcome friends from all over the world to visit our factory at any time!















