Basic Info.
Model NO.
carbon steel square pipe
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Section Shape
Square Rectangle
Grade
Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A
Outer Diameter
20*20-500*500mm ; 10*20-300*500mm, or as Required.
Thickness
1.0-30.0mm, or as Required.
Length
2-12m, or as Required.
Standard
ASTM, DIN, ISO, En, JIS, GB, etc.
Transport Package
Standard Sea-Worthy Package or as Required
Specification
As requirement
Product Description
Square tubes are classified according to their cross-sectional shapes: simple cross-section square tubes: square tubes and rectangular tubes. After the process is processed, it is rolled into strip steel. Generally, the strip steel is unpacked, flattened, crimped, and welded into a round tube, then the round tube is rolled into a square tube, and then cut to the required length. According to the production process, the square tube is divided into: hot-rolled seamless square tube, cold-drawn seamless square tube, extruded seamless square tube, and welded square tube. Rectangular pipes are divided into ultra-thick-walled rectangular pipes, thick-walled rectangular pipes and thin-walled rectangular pipes according to their wall thickness.
Product | Square and Rectangular Steel Pipe |
Material | Carbon Steel |
Grade | GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C, Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E EN: S185, S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade 42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80 JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE |
Standard | ASTM, DIN, ISO, EN, JIS, GB, etc. |
Surface | Galvanized, 3PE, painting, coating oil, steel stamp, drilling, etc. |
Ends | Plain ends |
Specification | OD: 20*20-500*500mm ; 10*20-300*500mm, or as required. |
Thickness: 1.0-30.0mm, or as required. |
Length: 2-12m, or as required. |
Pipe ends | Plain, Beveled, Threaded, Socket with holes, With PVC clap/ coupling/ clamp |
Application | Widely used in machinery manufacturing, construction, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobiles Industry, railway, highway guardrail, container frame, furniture, decoration, steel structure, etc. |
Tolerance | ±1% |
MOQ | 1 ton |
Supply Ability | 5000 tons / month |
Lead Time | 7-15 working days after the receipt of 30% deposit |
Payment Terms | 30%T/T Advance + 70% Balance |
Price Terms | FOB, CFR, CIF, EXW |
Packing | Standard sea-worthy package or as required |
Mechanical character & Chemical element of normal material:Material | Q195 | C | Mn | Si | S | P | |
Chemical | 0.06-0.12 | 0.25-0.50 | ≤0.30 | ≤0.050 | ≤0.045 | |
Composition | Tensile strength: 315-430(Mpa) |
(%) | Yield strength:195(Mpa) |
| Elongation:33 |
| Q235 | C | Mn | Si | S | P | |
| 0.12-2.0 | 0.3-0.70 | ≤0.30 | ≤0.045 | ≤0.045 | |
| Tensile strength: 375-460(Mpa) |
| Yield strength:235(Mpa) |
| Elongation:26 |
| Q345 | C | Mn | Si | S | P | V |
| ≤0.20 | ≤1.70 | ≤0.55 | ≤0.040 | ≤0.040 | 0.02-0.15 |
| Tensile strength: 470-630(Mpa) |
| Yield strength:345(Mpa) |
| Elongation:21 |
Rectangular Hollow Section | Square Hollow Section |
Size | Thickness | Size | Thickness | Size | Thickness |
mm | mm | mm | mm | mm | mm |
50 X 25 | 2 | 120 X 40 | 3 | 20 x 20 | 2 |
50 X 25 | 2.5 | 120 X 40 | 3.6 | 20 x 20 | 2.5 |
50 X 25 | 3 | 120 X 40 | 4 | 25 x 25 | 2 |
50 X 30 | 2.5 | 120 X 40 | 5 | 25 x 25 | 2.5 |
50 X 30 | 3 | 120 X 40 | 6 | 25 x 25 | 3 |
50 X 30 | 3.2 | 120 X 40 | 6.3 | 30 x 30 | 2.5 |
50 X 30 | 4 | 120 X 60 | 3 | 30 x 30 | 3 |
60 X 40 | 2.5 | 120 X 60 | 3.6 | 40 x 40 | 2 |
60 X 40 | 3 | 120 X 60 | 4 | 40 x 40 | 2.5 |
60 X 40 | 3.2 | 120 X 60 | 5 | 40 x 40 | 3 |
60 X 40 | 4 | 120 X 60 | 6 | 40 x 40 | 4 |
80 X 40 | 3 | 120 X 60 | 6.3 | 50 x 50 | 2 |
80 X 40 | 3.2 | 120 X 80 | 3 | 50 x 50 | 2.5 |
80 X 40 | 4 | 120 X 80 | 4 | 50 x 50 | 3 |
80 X 60 | 2.5 | 120 X 80 | 5 | 50 x 50 | 4 |
80 X 60 | 3 | 120 X 80 | 6 | 50 x 50 | 5 |
80 X 60 | 3.6 | 120 X 80 | 6.3 | 60 x 60 | 3 |
80 X 60 | 4 | 150 X100 | 3 | 60 x 60 | 4 |
80 X 60 | 5 | 150 X100 | 4 | 60 x 60 | 5 |
90 X 50 | 2.5 | 150 X100 | 5 | 70 x 70 | 3 |
90 X 50 | 3 | 150 X100 | 6 | 70 x 70 | 3.6 |
90 X 50 | 3.6 | 150 X100 | 6.3 | 70 x 70 | 5 |
90 X 50 | 4 | 160 X 80 | 3 | 80 x 80 | 3 |
90 X 50 | 5 | 160 X 80 | 4 | 80 x 80 | 3.6 |
100 X 40 | 3 | 160 X 80 | 5 | 80 x 80 | 5 |
100 X 40 | 3.6 | 160 X 80 | 6 | 80 x 80 | 6 |
100 X 40 | 4 | 160 X 80 | 6.3 | 90 x 90 | 3 |
100 X 40 | 5 | 200 X 100 | 4 | 90 x 90 | 3.6 |
100 X 50 | 3 | 200 X 100 | 5 | 90 x 90 | 5 |
100 X 50 | 3.6 | 200 X 100 | 6 | 90 x 90 | 6 |
100 X 50 | 4 | 200 X 100 | 6.3 | 100 x 100 | 4 |
100 X 50 | 5 | 200 X 100 | 8 | 100 x 100 | 5 |
100 X 50 | 6 | 200 X 100 | 10 | 100 x 100 | 6 |
100 X 50 | 6.3 | 200 X 100 | 12.5 | 100 x 100 | 8 |
100 X 60 | 3 | 200 X 100 | 16 | 100 x 100 | 10 |
100 X 60 | 3.6 | 250 X 150 | 6.3 | 120 x 120 | 5 |
100 X 60 | 4 | 250 X 150 | 8 | 120 x 120 | 6 |
100 X 60 | 5 | 250 X 150 | 10 | 120 x 120 | 8 |
100 X 60 | 6 | 250 X 150 | 12.5 | 120 x 120 | 10 |
100 X 60 | 6.3 | 250 X 150 | 16 | 150 x 150 | 5 |
100 X 80 | 3 | 300 X 200 | 6.3 | 150 x 150 | 6 |
100 X 80 | 3.6 | 300 X 200 | 8 | 150 x 150 | 8 |
100 X 80 | 4 | 300 X 200 | 10 | 150 x 150 | 10 |
100 X 80 | 5 | 300 X 200 | 12.5 | 180 x 180 | 6 |
100 X 80 | 6 | 300 X 200 | 16 | 180 x 180 | 8 |
100 X 80 | 6.3 | 400 X 200 | 10 | 180 x 180 | 10 |
| | 400 X 200 | 12.5 | 180 x 180 | 12.5 |
| | 400 X 200 | 16 | 200 x 200 | 6 |
| | 450 X 250 | 10 | 200 x 200 | 8 |
| | 450 X 250 | 12.5 | 200 x 200 | 10 |
| | 450 X 250 | 16 | 200 x 200 | 12.5 |
| | | | 250 x 250 | 8 |
| | | | 250 x 250 | 10 |
| | | | 250 x 250 | 12.5 |
| | | | 300 x 300 | 8 |
| | | | 300 x 300 | 10 |
| | | | 300 x 300 | 12.5 |
Chemical & Mechanical Properties of Carbon Steel Square PipesStandard | Grade | Chemical Components (%) | Mechanical Properties |
C | Si | Mn | P | S | Tensile Strength (Mpa) | Yield Strength(Mpa) |
ASTM AS3 | A | ≤0.25 | - | ≤0.95 | ≤0.05 | ≤0.06 | ≥330 | ≥205 |
B | ≤0.30 | - | ≤1.2 | ≤0.05 | ≤0.06 | ≥415 | ≥240 |
ASTM A106 | A | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥415 | ≥240 |
B | ≤0.35 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≥485 | ≥275 |
ASTM A179 | A179 | 0.06-0.18 | - | 0.27-0.63 | ≤0.035 | ≤0.035 | ≥325 | ≥180 |
ASTM A192 | A192 | 0.06-0.18 | ≤0.25 | 0.27-0.63 | ≤0.035 | ≤0.035 | ≥325 | ≥180 |
API 5L PSL1 | A | 0.22 | - | 0.9 | 0.03 | 0.03 | ≥331 | ≥207 |
B | 0.28 | - | 1.2 | 0.03 | 0.03 | ≥414 | ≥241 |
X42 | 0.28 | - | 1.3 | 0.03 | 0.03 | ≥414 | ≥290 |
X46 | 0.28 | - | 1.4 | 0.03 | 0.03 | ≥434 | ≥317 |
X52 | 0.28 | - | 1.4 | 0.03 | 0.03 | ≥455 | ≥359 |
X56 | 0.28 | - | 1.4 | 0.03 | 0.03 | ≥490 | ≥386 |
X60 | 0.28 | - | 1.4 | 0.03 | 0.03 | ≥517 | ≥448 |
X65 | 0.28 | - | 1.4 | 0.03 | 0.03 | ≥531 | ≥448 |
X70 | 0.28 | - | 1.4 | 0.03 | 0.03 | ≥565 | ≥483 |
API 5L PSL2 | B | 0.24 | - | 1.2 | 0.025 | 0.015 | ≥414 | ≥241 |
X42 | 0.24 | - | 1.3 | 0.025 | 0.015 | ≥414 | ≥290 |
X46 | 0.24 | - | 1.4 | 0.025 | 0.015 | ≥434 | ≥317 |
X52 | 0.24 | - | 1.4 | 0.025 | 0.015 | ≥455 | ≥359 |
X56 | 0.24 | - | 1.4 | 0.025 | 0.015 | ≥490 | ≥386 |
X60 | 0.24 | - | 1.4 | 0.025 | 0.015 | ≥517 | ≥414 |
X65 | 0.24 | - | 1.4 | 0.025 | 0.015 | ≥531 | ≥448 |
X70 | 0.24 | - | 1.4 | 0.025 | 0.015 | ≥565 | ≥483 |
X80 | 0.24 | - | 1.4 | 0.025 | 0.015 | ≥621 | ≥552 |
Address:
Room 1906, No. 20, Dongting Middle Road, Xishan District, Wuxi, Jiangsu, China
Business Type:
Manufacturer/Factory, Trading Company, Group Corporation
Business Range:
Metallurgy, Mineral & Energy
Management System Certification:
ISO 9001, ISO 9000, BSCI, QHSE
Company Introduction:
DELONG Steel is group company in the steel manufacture & Trading, founded in the2010s, 500+ staff, 20, 000+ m2 non-dust workshop, 30+ great large mills and cooperation partners in China, 3000, 000+ MT production per year under ISO CE management, 30, 000+customers in domestic and overseas market, 10 billion USD of annual turnover, 12+ subsidiary companies all over China, ranking the Top 100 private enterprises in China, 1 hour reach Shanghai/Tianjin /Guangzhou Port, we keep high quality, competitive price, thousands tons of stock, most efficient delivery and reliable cooperation for global valued customers. We have been engaging industry steel for over 10 years, best service and the most competitive price is one of our greatest advantages that make us today!
From our head office in Wuxi, Jiangsu Province, we have provided products and services to multiple sectors that span over 50 countries worldwide. There is no limit to our reach as we continue to develop within growing markets and territories.
We supply products that support a diverse and wide assortment of industries including oil and gas, automotive, chemical and construction. We are constantly looking to innovate with our extensive range of suppliers to offer products and solutions that are not only unique in their design but competitive in their price.
We are proud to work closely with industry and academic partners to continually improve our products and services, as a result, we have patented products designed to save you time and money.
We operate within the scope of ISO 9001: 2015 accredited management system and the raw materials are procured from suppliers in compliance with ASTM, BS EN and DIN standards.
Our products are rigorously inspected to ensure they are within tolerance of our customer′s specifications, we work with accredited laboratories for specialised material testing and chemical analysis.
In addition, we use X-ray fluorescence technology to meet our high inspection standards and to ensure that our customers get the best quality products.