Cutting


What cutting service we can offer?

* We can cut different shapes according to customers’ drawing or design

* We can also help the customers’ to make design or drawing for cutting.

* We can also make beveled cutting also.

* other cutting job and assistance


What is thermal cutting?

Thermal cutting refers to a method that uses concentrated thermal energy to melt or burn and separate materials. Thermal cutting is widely used in the processing of metal materials and machine parts in the industrial manufacture.


How many types of thermal cutting?

There are three types of thermal cutting machine: flame cutting, plasma cutting and laser cutting. Below is the compare of three types of thermal cutting for best performance:

Type

Flame Cutting

Plasma cutting

Laser Cutting

Material

Ferrous steel

Ferrous Steel

Non-ferrous metals

Metal

Non-metal

Thickness

3mm-1200mm

1mm-150mm

0.5mm-40mm

Advantage

* low cost

* for thick plate

* fast cutting speed

* smooth cutting surface

* small heat affection

* fast cutting speed

* fine cutting surface

* small heat affection

* non-touch and non-wear

How to control the cutting quality?

* JBT 10045: Thermal cutting--Quality and dimensional deviation in the gas cutting

* ISO 9013: Thermal cutting — Classification of thermal cuts — Geometrical product specification and quality tolerances


I class(A class): Nominal size and its tolerance

Thickness

(mm)

Nominal Size(mm)

>0<3

≥3<10

≥10<35

≥35<125

≥125<315

≥315<1000

≥1000<2000

≥2000<4000

Tolerance(mm)

>0≤1

±0.04

±0.1

±0.1

±0.2

±0.2

±0.3

±0.3

±0.3

>1≤3.15

±0.1

±0.2

±0.2

±0.3

±0.3

±0.4

±0.4

±0.4

>3.15≤6.3

±0.3

±0.3

±0.4

±0.4

±0.5

±0.5

±0.5

±0.6

>6.3≤10

-

±0.5

±0.6

±0.6

±0.7

±0.7

±0.7

±0.8

>10≤50

-

±0.6

±0.7

±0.7

±0.8

±1

±1.6

±2.5

>50≤100

-

-

±1.3

±1.3

±1.4

±1.7

±2.2

±3.1

>100≤150

-

-

±1.9

±2

±2.1

±2.3

±2.9

±3.8

>150≤200

-

-

±2.6

±2.7

±2.7

±3

±3.6

±4.5

>200≤250

-

-

-

-

-

±3.7

±4.2

±5.2

>250≤300

-

-

-

-

-

±4.4

±4.9

±5.9

II class(B class): Nominal size and its tolerance

Thickness

(mm)

Nominal Size(mm)

>0<3

≥3<10

≥10<35

≥35<125

≥125<315

≥315<1000

≥1000<2000

≥2000<4000

Tolerance(mm)

>0≤1

±0.1

±0.3

±0.4

±0.4

±0.7

±0.8

±0.9

±0.9

>1≤3.15

±0.2

±0.4

±0.5

±0.7

±0.8

±0.9

±1

±1.1

>3.15≤6.3

±0.5

±0.7

±0.8

±0.9

±1.1

±1.2

±1.3

±1.3

>6.3≤10

-

±1

±1.1

±1.3

±1.4

±1.5

±1.6

±1.7

>10≤50

-

±1.8

±1.8

±1.8

±1.9

±2.3

±3

±4.2

>50≤100

-

-

±2.5

±2.5

±2.6

±3

±3.7

±4.9

>100≤150

-

-

±3.2

±3.3

±3.4

±3.7

±4.4

±5.7

>150≤200

-

-

±4

±4

±4.1

±4.5

±5.2

±6.4

>200≤250

-

-

-

-

-

±5.2

±5.9

±7.2

>250≤300

-

-

-

-

-

±6

±6.7

±7.9


What is cold cutting?

Cold cutting adopts technical means or methods that do not generate high temperature during the cutting process, so that the material being cut maintains the original material characteristics. The temperature during the cutting process does not change sharply, and the temperature rise does not exceed 40 degrees Celsius. 


How many types of cold cutting?

There are four types of cold cutting: water jet cutting, shear cutting, saw cutting and abrasive cutting. Below is the compare of three types of thermal cutting for best performance:

Type

Water Jet Cutting

Saw Cutting

Shear Cutting

Material

Metal

Non-metal

Metal

Non-metal

metal

Thickness

100mm

15mm

≤16mm

Usage

* oil and petroleum pipelines

* natural gas

* chemical industry

* coal mines

* hazardous materials handling

 

* raw material division

* channel shapes

* semi-finished products

 

* coil open

* coil split

How to control the cutting quality?

* JB/T 11742

* ISO 2924-1973: Solid and segmental circular saws for cold cutting of metals, Interchangeability dimensions of the drive, Saw diameter range 224 to 2240 mm

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