Product Catalogue
ROUND STEEL PIPE
Sharp-corner rectangular tube, seamless and welded hollow sections, round pipe and section steel -- 2,800+ specifications, wall thickness up to 40 mm, certified for export to 50+ countries.
- 20×20 - 800×800 mm
- WT ≤ 40.0 mm
- Q195 - Q690 / S355J2
- 557+ items online
232 products found
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SEAMLESS ROUND HOLLOW SECTIONS
Q235 Q355 Seamless Welded Round Steel Pipe OD 10-700mm Factory Direct Supplier
Q235 Q355 Seamless Welded Round Steel Pipe, OD 10–700 mm, wall thickness 1–20 mm — available in both seamless (hot rolled/cold drawn)...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
Q235 Carbon Steel Welded Round Pipe OD 10-700mm API ASTM Supplier
Q235 Carbon Steel Welded Round Pipe, API 5L / ASTM A53, OD 10–700 mm, wall thickness 1–20 mm — hot-rolled and cold-rolled...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
ASTM A106 A53 Seamless Carbon Steel Round Pipe OD 10-1000mm Supplier
ASTM A106, ASTM A53 Seamless Carbon Steel Round Pipe, OD 10–1000 mm, WT 1–120 mm — hot-rolled and cold-drawn processes deliver ±1%...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
API 5L GR.B Spiral Welded Steel Pipe OD 10-1000mm WT up to 80mm Supplier
API 5L GR.B SSAW Spiral Welded Steel Pipe, OD 10–1000 mm, WT 1–80 mm — spiral welded process delivers large-diameter coverage ideal...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
Q345 ASTM A106 Seamless Round Steel Pipe OD 10-1000mm Manufacturer
Seamless Round Steel Pipe, ASTM A106 / GB/T 8163, OD 10–1000 mm, WT 1–120 mm — hot-rolled and cold-drawn processes ensure uniform...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
X42 X52 X60 X65 SSAW Spiral Welded Steel Pipe API 5L Supplier
X42 X52 X60 X65 SSAW Spiral Welded Steel Pipe, API 5L, OD 10–1000 mm, WT 1–80 mm — spiral welded process delivers...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
Q235 Q345 Seamless Steel Pipe OD 10-1000mm Manufacturer
Q235 Q345 Seamless Steel Pipe, OD 10–1000 mm, WT 1–120 mm, GB/T 8162 & ASTM A106 — hot-rolled and cold-drawn with ±1%...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
API 5L X42 X52 X60 Seamless Steel Pipe OD 10-1000mm Manufacturer
API 5L X42 X52 X60 Seamless Round Steel Pipe, OD 10–1000 mm, WT 1–80 mm — hot-rolled seamless process delivers superior pressure...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
Q235B SSAW Steel Pipe Hot-Dip Galvanized OD 10-1000mm Supplier
Q235B SSAW Spiral Welded Steel Pipe, OD 10–1000 mm, WT 2–50 mm — hot-dip galvanized for corrosion resistance in outdoor and underground...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
ASTM A106 Seamless Steel Pipe OD 10-609mm Supplier
ASTM A106 Gr.A / Gr.B Seamless Steel Pipe, OD 10–609 mm, WT 1.65–59.54 mm, hot rolled / cold rolled — designed for...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
ASTM A106 Seamless Steel Pipe Grade A/B OD 10-609mm Factory Direct
ASTM A106 Grade B Seamless Steel Pipe, OD 10–609 mm, WT 1.65–59.54 mm — hot-rolled and cold-drawn processes deliver tight dimensional tolerance...
Aug 21, 2026 View specs -
SEAMLESS ROUND HOLLOW SECTIONS
20# 45# Seamless Round Steel Pipe ASTM A106 API 5L Thick Wall Manufacturer
20# 45# Seamless Round Steel Pipe, ASTM A106 / API 5L, OD 10–609 mm, WT 1.65–59.54 mm — hot-rolled and cold-drawn processes...
Aug 20, 2026 View specs
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Custom cutting, marking, mill test certificates and professional container loading included. ISO 9001:2015 · Lloyd's CE · SGS / BV verified.