Product List

Contact us

    Jiangsu Gangyu Pipeline Equipment Co.,Ltd
    Address : Room 312, No. 32-1, Chengnan Road, Xinwu  District ,Wuxi City ,Jiangsu Province China
    Worktime : 8:00-17:00(Beijing time)
    Business Phone : 0086-510-81909158(Working time)  
    Fax :00 86-510-81909158
    Contact Person : Mr. SHAO FANG YUAN
    Business Phone : +86 13906182496
    Email :

Square Steel PipeMORE+

Rectangular tube without R Angle 300*100*14 S355 J2H

The publisher:Jiangsu Gangyu Pipeline Equipment Co., Ltd Release time:2020/2/6 18:26:48 Click on the:56 Shut down

Product details:

Origin: China

Brand name: steel pipe

Certification :asme/GB/EN/JIS /

Model: 300 * 100 * 14

Terms of payment and shipment:

Minimum order quantity :1 piece

Price: negotiable

Packing details: bundling

Delivery time: 10 working days after receiving the payment

Terms of payment: l/c, t/t, western union

Supply capacity: 50,000 pieces/month

Carbon steel tube end type: common tube end

Shape: round material: S355 J2H

Surface: black wall thickness :14mm

Standard :asme /GB/EN/JIS/ is size :200*200*14

Scope of ASME A519

The standard includes seamless hot rolled tubes and cold drawn tubes in sizes below 12 inches.(323.8mm) outside diameter is round tube, wall thickness meets the requirements.

The pipes shall be arranged in the shape specified by the buyer: round, square, rectangular and special section.


Low alloy square tube S355 J2H

Supply capacity

500 tons per week

Processing method

Hot rolled

Outer diameter

6-630 - mm

The thickness of the

0.4-30 mm

The length of the

Specific length or random length

Grade of steel

ASTM A106 B, A53 B, API 5L B, 20#, 45#, 40Cr


ASTM/ASME, GB, DIN, JIS, T14975, etc.


O.D: 2 "- 38 (60.3-1000 - mm)"

W.T: SCH5S SCH10S, SCH40S SCH80S, SCH160S, etc. 40 mm (0.5 -)

Or customize non-standard sizes as needed.


1. Protect the ends with a plastic cover.

Plastic bags are wrapped outside the pipe.

3. The package shall be covered and bound with polyethylene for safety.


ISO 9001:2008, API 5L Grade B

The time of delivery

The 30% deposit will be received after 7-10 days depending on the quantity

Terms of payment

T/t, l/c at sight

Trade terms


Hot rolled square rectangular square pipe Angle square pipe" detailed introduction

A basic introduction to hot - rolled rectangular square tube

Rectangular rectangular tube: rectangular rectangular tube whose R Angle is not more than one times the wall thickness.

Angular rectangular tube: when the wall thickness is no more than 3mm, the R Angle is no more than 1mm;When the wall thickness is 3-8mm

When R Angle is not greater than 2mm;When the wall thickness is more than 8mm, R is no more than 3mm, which is a sharp rectangular tube.

Properties of hot - rolled rectangular rectangular square tube

2. Research and development purpose of rectangular rectangular tube with right Angle/sharp Angle

Mechanical guide rail, agricultural machinery framework, steel and wood furniture rectangular rectangular tube and curtain wall construction of rectangular rectangular tube, due to the need for tolerance and cooperation, the other square rectangular tube size requirements, need to use high-precision rectangular rectangular tube, which these customers * concern about the plane of rectangular rectangular tube.At present, the production of rectangular tube is mainly made by cold drawing and continuous bending of steel plate, and the flatness of finished steel tube cannot meet the needs of customers.The square moment tube is manufactured by the progressive roll extrusion technology, which has the potential of ** controlling the plane size of the finished steel tube by improving the machining accuracy of the working roller and continuously adjusting the assembly spacing of the roller system.

Technical parameters of hot - rolled rectangular square tube

Square rectangular tube with right Angle/sharp Angle

Rectangular square tube size range is:

Side length: 30mmx30mm~400mmx400mm, wall thickness: 1mm~16mm;

Rectangular tube size range is:

The side length is 30mmx50mm~300mmx600mm, and the wall thickness is 1mm~16mm.


Square rectangular pipe material with right Angle/sharp Angle

Domestic standards (GB/ t700-2006, GB/ t69-2015, GB/T/1591-2018) :

Q195, Q235B, Q355 (B/C/D), Q420 (B/C/D/E), Q460 (B/C/D/E), 20#, 45#, etc.

European standard (en10025-1993) :

S235JR, S235J0, S355J2H, S355JRH, S355J0H, S460NL, S460ML.

American standard (ASTM A106/A500) :

Gr.a, gr.b, gr.c, gr.d, Gr50, Gr60, Gr65.

Date of reference (JIS G3466) :

SS330, SS400, STK490, etc.


Square rectangular tube with right Angle/sharp Angle

GB/ t6728-2017, GB/ t3094-2012

DIN EN 10210, DIN EN 10219

American standard ASTM A500 featured

Date: JISG 3466

Australian standard: AS 1163

Instructions for hot - rolled square rectangular square tube

1. The square rectangular tube is processed and manufactured by the progressive roll extrusion technology, and the square rectangular tube of different materials and specifications is collected for the flat surface rebound. The square rectangular tube is analyzed by variance analysis and experimental design, and the flat surface rebound curve of the square rectangular tube is drawn.

(note: welded rectangular rectangular tube can be used as raw material hot rolled strip steel, by cold bending forming, or formed into a round tube square, after heat treatment;(2) seamless rectangular rectangular tube, the raw material is hot rolled seamless tube directly formed by hot rolling or by cold forming)

2. According to the theory and practice of roll flattening, design and manufacture rollers with different final roll crown required for products with different material strength requirements for processing are used for production.

3. Strictly control the machining accuracy of working roller and improve the control accuracy of finished square moment pipe flatness.

4. The assembly spacing of the roller system is adjusted continuously to ensure the product is parallel to the plane of both sides.

Jiangsu Gangyu Pipeline Equipment Co., Ltd   Address : Room 312,No.32-1,Chengnan Road ,Xinwu District ,Wuxi City Jiangsu Province,China  Worktime :8:00-17:00(Beijing time) 

Business Phone : 86--13906182496(Nonworking time)  Contact Person :Mr. SHAO FANG YUAN