
Rectangular Steel Tube (RHS)
20×10 to 400×200 mm, wall 1.0–16 mm. Q235B / Q355B to EN 10219 and ASTM A500, cut to length.
Send Your Specifications — Get a Quotation Within 1 Working Day
Send us your sizes, steel grades, quantities and destination port — we come back with a firm quotation, total weight and lead time, all within one working day.
Every photo below was taken in our own yard at Lecong Steel World — stock, loading and processing. What you see is what we ship.








Full racks and full trucks, filmed in our own stockyard at Lecong Steel World — no stock footage.
Fourteen categories held in stock at Lecong Steel World — cut to length, drilled, galvanized and packed for export.

20×10 to 400×200 mm, wall 1.0–16 mm. Q235B / Q355B to EN 10219 and ASTM A500, cut to length.

15×15 to 400×400 mm, wall 0.8–16 mm. For racking uprights, frames and structural columns.

OD 15–610 mm, wall 1.0–20 mm. Seamless and ERW, plain end or threaded.

20×20×3 to 200×200×24 mm, equal and unequal. Q235B / Q355B / SS400 / S235JR.

5# to 40#, Q235B / Q355B / SS400. Purlins, bracing and frame supports.

100×100 to 900×300 mm, Q235B / Q355B. Welded and hot rolled, cut to your project list.

10# to 63#, Q235B / Q355B. For beams, columns and machine bases.

20×3 to 200×20 mm, Q235B / Q355B. Cut to length, punched and bundled.

DN15 to DN600, Q235B / Q195. Tested to GB/T 3091 and ASTM A53.

DN15 to DN200, zinc 275–500 g/m² to EN ISO 1461 and ASTM A123.

20×20 to 200×200 mm. Pre-galvanized or hot dip after welding — holes cut before coating.

0.5–200 mm. Hot rolled, cold rolled, checkered, galvanized, wear resistant and weathering plate.

0.3–3.0 mm, SPCC / DC01 / ST12. Full coil or decoiled cut-to-length sheet.

Coil, plate and strip, Q235B / Q355B / SPHC. Slitting and cut-to-length available.
We process, pack and load before the container is sealed, so the goods arrive ready to weld and install.
Saw cutting to ±1 mm, lengths from 0.5 m to 12 m.
Holes, slots and mitres to ±0.2 mm, ready for the welding fixture.
Punched and drilled before galvanizing, so the cut faces stay coated.
Press brake bending for frames, brackets and clamps.
Bundled, strapped, marked and rust protected for sea freight.
Loading plan by weight; photos, container and seal numbers sent.
EN 10204 3.1 or 2.2, plus a coating report for galvanized material.
Loaded at Nansha or Shekou port, Guangdong.
Mon–Sat 08:00–18:00 (GMT+8).
Typical projects we supply from Lecong — steel structures, solar mounting, scaffolding and fabrication shops in China, Hong Kong and Southeast Asia.
H beam, channel and rectangular tube cut to the project list and delivered to site.
Hot dip galvanized RHS and C-channel, holes cut before the coating is applied.
Scaffolding pipe and couplers bundled to site lengths for direct use.
SHS and RHS uprights, punched and ready for powder coating.
High strength rectangular tube, laser cut to fixture tolerance.
Stainless and galvanized sections in mirror and brushed finish.
Guangdong Zhengyao Steel Materials Co., Ltd. (ZHENGYAO STEEL) is based at B2 Area, Nanqi Road 02A, Lecong Steel World, Shunde, Foshan — one of the largest steel distribution hubs in South China.
We supply steel tube, section steel and steel plate to contractors, steel structure fabricators and metalworking shops in China, and export to buyers in Hong Kong and Southeast Asia. Because our stall sits on the same street as the mills and stockholders, specifications are checked quickly and prices come back the same day.
Cutting, drilling, bending, galvanizing and export packing are all handled before the container is sealed, with mill test certificates issued on request.
The questions buyers ask most before placing an export order.
Practical buying notes from twenty years in the Lecong steel trade — specifications, tolerances, container loading and grade selection, one topic at a time.
A 20 ft box has an internal length of about 5.89 m, so 6 m stock must be cut to 5.8 m or to drawing lengths before packing.
Holes and cuts made after galvanizing expose bare steel at the cut edge, and no coating repair fully restores it.
Steel is dense: a 40 ft high cube tops out around 26 tonnes long before it looks full. Plan the tonnage, not the space.
Chinese standards allow a −10% wall thickness tolerance on welded tubes. Fix the inspection standard and the settlement method — theoretical weight or weighbridge — before you sign, and the invoice will match the goods.
Q235B (≈S235JR / ASTM A36) covers general structures and furniture frames; Q355B (≈S355JR) adds yield strength for racking, trailers and load-bearing beams — at roughly 5–8% higher cost per tonne.
Rectangular tube gives the best bending efficiency per kilo for beams, square tube suits columns and uprights, round pipe wins where welds run in every direction. Choose by load path, not by habit.
Fill in the list below and send it by WhatsApp or email — we reply within 1 working day.
B2 Area, Nanqi Road 02A, Lecong Steel World, Shunde, Foshan, Guangdong, China.
Point your phone camera at the code — it opens a WhatsApp chat with us directly.
WhatsApp QR待上传Prefer typing? Open the chat directly below.