Carbon Steel Pipe Q235B 4 inch Sch 40
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Carbon Steel Pipe Q235B 4 inch Sch 40
Shaanxi Shuncheng Tian Steel Co., Ltd. supplies 4 inch Schedule 40 carbon steel pipe in Q235B grade for general plant piping, water supply lines and structural fabrication. The 114.3 mm outside diameter with a 6.02 mm wall is the workhorse size for low-pressure fluid transfer and utility runs, and pipe is available with a black, varnished or coated finish.
Specifications
| Grade | Q235B |
| Standard | GB/T 3091; ASTM A53 Grade B available on request |
| Outside diameter | 4 in / 114.3 mm |
| Wall thickness | Schedule 40 / 6.02 mm |
| Nominal weight | Approx. 16.07 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 Q235B 4 inch Sch 40 pipe cover water and utility lines, compressed air headers, structural bracing, guard rails and general engineering work. Q235B is a weldable mild carbon steel, which suits low-pressure service, fabricated frames and machined components. 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
Sizing tonnage before you order? Our guide to the steel pipe weight calculator walks through the annulus formula, a worked 4 inch Schedule 40 example and container planning for carbon steel pipe.
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!















