ISO 9001:2015 · CE · SGS / BV READY
Q355/S355 MS SHS Square Hollow Structural Section, ASTM A500 / GB/T 3091, side length 19×19–800×800 mm, wall thickness 1–30 mm — available in both ERW welded and seamless processes, with multi-grade coverage including S235, S275, and STK400 for cross-standard structural applications. Surface options include black painting, galvanized, varnish, or bare per project specification, and custom cut-to-size lengths reduce on-site rework. Backed by original mill test certificates with full traceability, ISO 9001:2015 certification, and SGS/BV third-party inspection for confident procurement.
Specifications & Tags
Published: August 2, 2026
Full specification, steel grade and processing information. Custom cutting to drawing is available on every item.
¥750.00
Q355/S355 MS SHS Square Hollow Structural Section, ASTM A500 / GB/T 3091, side length 19×19–800×800 mm, wall thickness 1–30 mm — available in both ERW welded and seamless processes, with multi-grade coverage including S235, S275, and STK400 for cross-standard structural applications. Surface options include black painting, galvanized, varnish, or bare per project specification, and custom cut-to-size lengths reduce on-site rework. Backed by original mill test certificates with full traceability, ISO 9001:2015 certification, and SGS/BV third-party inspection for confident procurement.
Request Your Q355 S355 SHS Quote With Mill Test Certificate
Submit your specification list — steel grade, section size, wall thickness, length, quantity, and destination port — and receive a detailed quotation with original mill *n Jiyuan Special Steel Tube Co., Ltd
Tel: +86 531 8573 6315
Mobile/WhatsApp/WeChat: +86 188 5315 7756
Email: admin@xjyplate.com
Website: www.xjyplate.com
Quotation within 12 working hours, including equivalent grade proposal, cutting plan and loading method for your port.
Same category, same certified traceability -- every piece backed by an original mill test certificate.
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