Product
Black Square Steel Tube
Use this page to prepare an RFQ for structural and fabrication buyers using ungalvanized square tube before painting or welding. It keeps the inquiry focused on grade, size, quantity, tolerance, certificate, packing, and destination details.
How To Specify This Requirement
Black Square Steel Tube RFQs should confirm the application, standard, grade, product form, size range, delivery condition, and inspection scope.
Himount Steel reviews the ordered standard, grade, dimensions, inspection level, packing method, and shipment route before confirming price and lead time.
Key Ordering Points
| Standard / reference | ASTM A500 / EN 10219 / project standard |
|---|---|
| Grade / code | Black square tube grade as specified, such as Grade B/C or S235/S355 route |
| Product family | Structural & Mechanical Tubes |
| Common quotation use | structural and fabrication buyers using ungalvanized square tube before painting or welding |
| Key RFQ focus | Confirm square size, wall thickness, length, and steel grade |
| Quality documents | MTC, heat number traceability, inspection records, packing list, and loading photos when required. |
| Commercial details | Quantity per size, destination port, Incoterms, requested lead time, and packing preference. |
Buyer Checks Before Quotation
- Confirm square size, wall thickness, length, and steel grade
- State black surface, oiled surface, or primer requirement
- Confirm bundle weight, end protection, MTC, and loading method
- Confirm whether third party inspection, witnessed testing, or special certificate wording is needed.
- Send drawings or previous purchase records when dimensions or tolerances are project specific.
International Standard Notes
This page uses the buyer-facing reference `ASTM A500 / EN 10219 / project standard` and grade/code `Black square tube grade as specified, such as Grade B/C or S235/S355 route` as RFQ checkpoints. The table below helps compare common international wording without claiming automatic equivalence.
| API / ASTM reference | API 5L is common for line pipe; ASTM A53 and ASTM A106 are common carbon pipe references; ASTM A252 is common for pipe piles. |
|---|---|
| EN / project reference | EN or project-specific pipe standards may control dimensions, testing, coating, and certificate wording. |
| Order check | Use these references to prepare the inquiry. Final acceptance follows the buyer drawing, project specification, and MTC wording. |
Related Himount Pages
Prepare A Complete Steel Inquiry
Send the product standard, grade, size list, quantity, drawings, inspection scope, certificate request, packing method, and destination port.