Product Details
Gi pipe s355 square hollow section steel tube Hot Dip Galvanized Square Steel Rectangular Steel Pipes and Square Tube
Product Description
Square pipe is a name for square pipe and rectangular pipe, that is, steel pipe with equal and unequal side lengths. It is made of
rolled strip steel after process treatment. Generally, the strip steel is unpacked, leveled, crimped and welded to form a round
pipe, then rolled into a square pipe, and then cut into the required length.
Product Name | Galvanized square pipe |
Specifications | Square pipe: 20*20mm~500*500mm Thickness: 1.2mm~20mm Length: 2.0m~12m |
Material | Low carbon steel |
Steel Grade | Q195 = S195 / A53 Grade A Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2 Q355 = S355JR / A500 Grade B Grade C |
Standard | EN10219, EN10210 GB/T 6728 JIS G3466 ASTM A500, A36 |
Surface Anti-rusty Coating | pre-galvanized (Zinc coating: 40-80g/m2) hot dipped galvanized (Zinc coating: 200-600g/m2 ) |
Pipe Ends | Plain ends |
Certificates | ISO 9001 / ISO 18001 / ISO 14001 / CE |
Packing and Shipment | 1. OD 300mm and below In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles 2. above OD 300mm in bulk or according to custom opinion 3. 25 tons/container and 2 tons/size for a trial order; 4. For 20" container the max length is 5.8m; 5. For 40" container the max length is 11.8m. |
Usage | Construction / building materials steel pipe Structure steel pipe Solar structure component steel pipe Fence post steel pipe Greenhouse frame steel pipe |
Trade terms | FOB, CFR, CIF, EXW, FCA |
Payment terms | T/T, LC |
Delivery time | 15-45 days (based on quantity) after receiving advanced payment by T/T or LC . |
Main market | Southeast Asia, South Asia, Middle East, Europe, Middle&South America, Africa and Oceania |


|
Square Hollow Section | Thickness |
20*20 25*25 30*30 | 1.2-3.0 |
40*40 50*50 | 1.2-4.75 |
60*60 | 1.2-5.75 |
70*70 80*80 75*75 90*90 100*100 | 1.5-5.75 |
120*120 140*140 150*150 | 2.5-10.0 |
160*160 180*180 200*200 | 3.5-12.0 |
400*400 280*280 450*300 450*200 | 5.0-20.0 |
250*250 300*300 400*200 350*350 350*300 | 4.5-15.75 |

Galvanized Steel Pipe |
Shape | Round Pipe | Square Pipe |
Size(OD) | 20-219mm | 20mm x20mm-600mm x600mm |
Wall Thickness (W.T.) | 0.6mm-10mm | 0.6mm-10mm |
Length | 6m/9m/12m or as customers requirements |
Zinc Coating | 40-275g/m2 |
Standards | ASTM A500 GB/T3094 GB/T6728 BS1387 JIS G3466 |
| BS EN10210 BSEN10219 |
Materials | Q195-Grade B, SS330,SPHC, S185 |
| Q215-Grade C,CS Type B,SS330, SPHC |
| Q235-Grade D,SS400,S235JR,S235JO,S235J2 |
| Q345-Grade A,B,C,D,E. |
Technique | Welded |
| ERW &EFW |
| Cold Rolled or hot Rolled |
Ends | 1) Plain |
2) Beveled |
3) Thread with Coupling or cap |
4) Chamfer |
5) Groove |
6) Screw |
End protector | 1. Plastic pipe cap |
2. Iron protector |
Application | Widely used in Structure |
Accessorize, Construction, Agriculture, Such as Greenhouse,Farm fence |
Fluid transportation, machinery parts |
the stress parts of the automobile tractor parts etc. |
Production process

PACKING
We will select the corresponding packaging method according to the different types of products. We will do our best to reduce the
loss in transportation.
TRANSPORTATION
Before the shipment, there will be professional quality inspection personnel to carry out on-site testing of materials,
specifications, etc, and photographed and archived. During the cargo transportation process, the customer can track and inquire
about the progress of the logistics
INSPECTION
Our products are checked through 16 processes at least , and have quality inspection reports from authoritative third
parties.Professional inspection is provide to ensure that the weight of the goods is sufficient.

Why Choose Us ?

Q1: Are you a factory or trading company?
A: We are manufacturers and also do export trade.
Q2: Where is your factory located?
A: Weifang Wilda Machinery CO.,Ltd is located in Shandong province of China,
which has 19 years experience manufacture in metao raw material and products industry
Q3: Can I get some samples?
A:Yes,We are pleased to provide you with samples of our products.
Q4: How about your quality?
A:We serious control the quality from raw material to finished pipes. quality.BV, ISO
certificates and SGS test can be provided .So please be assured that our goods is qualified.
Q5: Price advantage ?
A: Our price is workable, and we are manufacturer then you can get a competitive price.
Q6:Could you special design and produce for you ?
A: Sure, we have all kinds of professional engineers,Could design and produce special product
according to customer requested.Such as: special Size, special control, or OEM, etc.
Q7: Could you special design and produce for you ?
A: Sure, we have all kinds of professional engineers,
Could design and produce special product according to customer requested.
Such as: special Size, special control, or OEM, etc.
Q8: Do you looking for Agent ?
A: Yes, we're looking for the agent all over the world, please contact us for further discussion.
Company Profile
Our company has high-precision welded pipe production lines, which
can be produced according to customer requirements: galvanized
round steel pipes, square pipes, black pipes and other
special-shaped steel pipes.
We have sheet metal processing equipment, pipe bending equipment,
welding workshop and surface treatment workshop, excellent design
team and skilled workers, which can meet the needs of more customer
orders.
Our products are widely used in agricultural greenhouses, animal
husbandry metal fences, public road guardrails, building steel
structures, and automotive industry steel structures,
Good quality and competitive price are our advantages, we hope to
cooperate with more customers and friends!