Rectangular hollow sections (RHS)

Gram Bangla Tubes Ltd (GBTL) manufactures rectangular hollow sections (RHS) by electric resistance welding (ERW) in Sonargaon, Narayanganj, Bangladesh, in sizes from 20x40 to 60x120 mm.

Rectangular hollow sections (RHS) from Gram Bangla Tubes Ltd. (GBTL) are rectangular steel tubes for solar mounting, building frames and furniture in Bangladesh. Solar and construction sizes are RHS 50x100 mm in a 3.0 mm wall and RHS 60x120 mm in a 3.0 or 4.0 mm wall. Furniture sizes are RHS 20x40 mm, with walls from 0.80 to 2.00 mm, and RHS 40x80 mm, with walls from 1.20 to 2.00 mm.

Solar and construction RHS comes GP pre-galvanized or MS black, with hot dip galvanizing on request. Furniture RHS comes cold rolled black or GP pre-galvanized and is powder coat ready. Order solar and construction RHS from 2 MT and furniture RHS from 1 MT. Custom RHS sizes need a full coil run, with a 20 MT minimum.

Solutions: Solar mounting, Construction and infrastructure, Furniture tubing

Black mild steel rectangular hollow section tubes in a strapped bundle — Photos are representative. Finish and size may differ from the item shown.

RHS sizes

One row per catalog item. Open the item for its full specification, and weight per metre where a size table is published.

Rectangular hollow sections (RHS): sizes, wall, length, finish and order route
Product	Size	Wall	Length	Finish	Order
RHS 50x100 mm	50x100 mm	3.0 mm	6 m	Pre-galvanized (GP), MS black, Hot dip galvanized, on request	MOQ from 2 MT
RHS 60x120 mm	60x120 mm	3.0 and 4.0 mm	6 m	Pre-galvanized (GP), MS black, Hot dip galvanized, on request	MOQ from 2 MT
Rectangular Tube 20x40 mm	20x40 mm	0.80 to 2.00 mm	Confirmed on quote	Cold rolled black, Pre-galvanized (GP)	MOQ from 1 MT
Rectangular Tube 40x80 mm	40x80 mm	1.20 to 2.00 mm	Confirmed on quote	Cold rolled black, Pre-galvanized (GP)	MOQ from 1 MT

RHS questions

When should I choose RHS instead of SHS for a steel frame?

Choose RHS when a frame member bends mainly in one direction, such as a beam or rafter. Set with its deeper side upright, an RHS is stiffer in that direction than a square tube of similar weight. GBTL offers RHS 50x100 mm and RHS 60x120 mm for solar and construction frames in Bangladesh.

What rectangular tube sizes does GBTL make for furniture?

GBTL makes RHS 20x40 mm in 0.80 to 2.00 mm walls and RHS 40x80 mm in 1.20 to 2.00 mm walls for furniture. Both sizes come cold rolled black or GP pre-galvanized, ready for powder coating after standard pretreatment. The furniture minimum is 1 MT for standard sizes, mixed across sizes and thicknesses in one order.

Can RHS 60x120 be hot dip galvanized?

RHS 60x120 mm can be hot dip galvanized on request. The zinc coat for each wall thickness is listed in the RHS spec sheet, which GBTL shares with buyers on request.

How do I order RHS from GBTL?

Send GBTL a quote request with the RHS size, wall thickness, finish, quantity in MT and delivery district. You can also call the GBTL hotline on +88 01907 084 261, Saturday to Thursday, 9:00 to 18:00. GBTL delivers RHS factory direct to districts across Bangladesh.

What length does GBTL RHS come in?

GBTL RHS 50x100 mm and RHS 60x120 mm for solar and construction come in 6 m lengths. The length of furniture rectangular tube 20x40 and 40x80 mm is confirmed on quote. Tell GBTL the length you need when you request a quote.