15mm*1.77kg/m square bar for construction

Ref Price:
Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
100000 m.t./month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Product Description:

 

Hollow Section-Square Tubes

 

Application:

 

It is widely used in building, machine, chemical equipment, automobile industrial, container, it is also applied to agriculture and mine machine.

Standard:

  ASTM A500, GB6728

Steel grade:

  ASTM A500: A, B, C

  GB6728:Q195,Q215,Q235,Q345

Size of Pipe:

 

*Remark: Besides below sizes, we also can arrange production based on requirement of customers

 

 

SIZE(mm)

THICKNESS(mm)

10×10

0.6-1.0

12×12

0.6-1.0

16×16

0.6-1.2

19×19

0.6-1.5

20×20

1.6-1.5

25×25

1.0-2.75

30×30

1.0-2.75

32×32

1.0-3.0

38×38

1.0-3.0

40×40

1.0-3.5

50×50

1.0-5.0

60×60

1.0-6.0

63.5×63.5

1.0-6.0

70×70

1.5-6.0

75×75

1.5-6.0

80×80

2.0-6.0

90×90

2.0-6.0

100×100

2.3-6.0

120×120

4.0-6.0

125×125

4.0-6.0

150×150

4.0-8.0

200×200

6.0-12

250×250

6.0-12

300×300

6.0-12

400×400

6.0-12

 

 

 

Standard: ASTM A500

 

 

Chemical Composition(%)

 

 

Chemical Requirement

 

Composition %

Grade A

Grade B

Heat

Product

Heat

Product

Element

analysis

analysis

analysis

analysis

Carbon max

0.26

0.3

0.22

0.26

Manganese max

1.4

1.45

Phosphorus, max

0.035

0.045

0.03

0.04

Sulfur max

0.035

0.045

0.02

0.03

Where an ellipsis (...)appears in this table, there is no requirement

 For each reduction of 0.01 percentage point below the specified maximum for carton, and increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.6% by product analysis

 

Mechanical Properties

 

Tensile Requirement

 

Grade A

Grade B

Tensile strength, min, psi (Mpa)

48000 (400)

70000 (483)

Yield strength, min, psi (Mpa)

36000 (250)

50000 (345)

Elongation in 2 in. (50.8mm), min, %

23

23

 

 

 

GB6728:

 

 

 

Steel Grade

 

CHEMICAL COMPOSITION

 

MECHANICAL PROPERTIES

 

C (%)

 

Si (%)

 

Mn

 

(%)

 

P(%)

 

Max

 

S (%)

 

Max

 

YS(Mpa)

 

Min

 

TS(Mpa)

 

Min

 

El (%)

 

Min

 

Q195

 

0.06-0.012

 

0.3

 

0.25-0.5

 

0.45

 

0.5

 

195

 

315

 

22

 

Q215

 

0.09-0.15

 

0.3

 

0.25-0.55

 

0.45

 

0.5

 

215

 

335

 

22

 

Q235

 

0.12-0.22

 

0.3

 

0.3-0.7

 

0.45

 

0.45

 

235

 

375

 

20

 

Q345

 

0.20

 

0.55

 

1.0-1.6

 

0.45

 

0.45

 

345

 

510

 

21

 

 

producing of Hollow Section-Square Tubes

Square Welded Hollo Sectio/Welded Rectangle Hollow Section

 

delivery of Hollow Section-Square Tubes

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:100*100*2.5 square with 20 square meters of housing security light steel structure:
Sun room in the South or the north, need to reserve the burden of snow is not the same.
Q:The steel structure material can do
Yes, if you are easy to do, you can
Q:Are square steel, rectangular tube and angle steel shaped or light steel?
Section steel is a kind of strip steel with definite section shape and size.In accordance with the different smelting quality of steel, steel is divided into ordinary steel and high quality steel. According to the current catalogue of metal products, ordinary steel can be divided into large section steel, medium section steel and small section steel. The section steel can be divided into I-beam, channel steel, angle steel, round steel and so on according to its sectional shape.Large steel: large steel, I-beam, channel steel, angle steel and flat steel are hot rolled, round bar, Fang Gang, six angle iron in addition to hot rolling, there are forging, cold drawn and so on.I-beam, channel and angle steel are widely used in industrial buildings and metal structures, such as factories, bridges, ships, agricultural machinery, vehicle manufacturing, transmission towers, transport machinery, often in conjunction with the use of. Flat steel is used as a bridge, a housing, a fence, a transmission ship, a vehicle, etc. on a construction site. Round steel and square steel are used for all kinds of machine parts, agricultural machinery parts, tools and so on.Medium type steel: medium type steel, medium, groove, corner, round, flat steel use, similar to large steel.Small steel: small steel, middle, round, square, flat steel processing and use similar to large steel, small diameter round steel is often used for building steel
Q:The steel and wood preservative in the flower is how to connect
A dovetail screw / stainless steel fixed special anticorrosive wood keel screws,
Q:What is the use of square steel keel or welding steel canopy
Sunshine board: advantages and characteristics of canopy cover top plate endurance detailed materials: flame retardant of spontaneous combustion temperature of 630 DEG C PC endurance board (wood 220 degrees C), by the national quality supervision and testing of fire building materials testing center, PC board of GB combustion (8624-1997 flame retardant grade B1), which belongs to the flame retardant engineering materials. Chemical corrosion resistant PC resistance board has good chemical resistance and corrosion resistance. It can resist all kinds of organic acids, inorganic acids, weak acids, vegetable oils, neutral salt solutions, aliphatic hydrocarbons and alcohol at room temperature. Heat resistant and cold resistant PC endurance board has good resistance to temperature difference. It can adapt to all kinds of severe weather changes from cold to high temperature. It can keep all kinds of physical performance indexes stable between -40 and 120 degrees centigrade. The photochemical PC resistance plate has the highest transmittance in visible and near infrared spectrum. Depending on the color, the transmittance is up to 12%-88%.
Q:What is the hot dip galvanized steel, production process?
Simply speakingWorkpiece: alkaline degreasing, water cleaning, acid cleaning, rust removing, water cleaning, plating aid, solvent drying, hot galvanizing, water cooling, test
Q:The anti-theft lock in the steel compression spring is what?
Spiral spring requires surface decarburization less than 0.5% of the diameter, polished surface, long fatigue life, dimensional tolerances more stringent requirements, there should be no defect transmission. The hot working process is often difficult to meet the requirement of the user, therefore, hot forming of cold forming of automotive suspension coil spring gradually replaced by drawing, heat treatment (quenching and tempering of martensite GET) spiral spring made after.
Q:You need to light steel keel wall square steel
Needed. The material of the light steel keel partition wall is galvanized iron plate, the pressed keel and the gypsum board (or calcium silicate board), its merit is the light weight, easy to walk the electric wire tube, the construction is quick. But the fire is not good, it is dry work. The cost is higher.
Q:4*4 steel welding frame tank do strong?
Or more strong legs 4 legs is not easy to findAdd a circle support at the bottom of the cylinder, top two, it is better to get a board, more stable table
Q:The difference between cold and hot galvanized steel hollow where
Hot rolling process is: the ingot directly into square tube, and then galvanized, also known as seamless pipe.Usually than cold-rolled steel hot-rolled square steel prices high.

1. Manufacturer Overview

Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range