20 # steel pipe material is 20 steel, generally 20 seamless steel pipe 20 # steel pipe material is: high-quality carbon structural steel brand: 20 steel standard: GB/T 699-1999 & GB/T 3639-2008
â—Characteristics and application scope:
Cold deformation high plasticity, general for bending, rolling, crimping and hammer arch processing, arc welding and contact welding welding performance, gas welding thickness is small, strict shape or complex shape of the parts are prone to cracks. Machinability Cold drawing or normalizing is better than annealing. It is generally used for manufacturing with low stress and high toughness requirements.
â— Chemical composition:
Carbon C: 0.17 to 0.23 Silicon Si: 0.17 to 0.37 Manganese Mn: 0.35 to 0.65 Sulfur S: ≤ 0.035 Phosphorus P: ≤ 0.035 Chromium Cr: 0.25 Nickel Ni: 0.25 Copper Cu: 0.25
â—Mechanical properties:
Tensile strength σb (MPa): ≥410 (42) Yield strength σs (MPa): ≥ 245 (25) Elongation δ5 (%): ≥25 Section shrinkage ψ (%): ≥ 5, Hardness: Not treated , ≤156HB, sample size: sample size 25mm
â— Heat Treatment Specification and Metallographic Organization:
Heat treatment specifications: normalizing, 910°C, air cooling. Metallographic structure: ferrite + pearlite.
â—Delivery status: Delivery with no heat treatment or heat treatment (annealing, normalizing or high temperature tempering). The requirements for the delivery of heat treatment shall be specified in the contract, and those not specified shall be delivered without heat treatment.
20 # steel weight formula: [(outer diameter - wall thickness) * wall thickness] * 0.02466 = kg / meter (weight per meter)
Steel pipe weight formula For example: [(68-4)*4]*0.02466*1=6.31296 (kg/m)
This pipe knowledge is provided by.
â—Characteristics and application scope:
Cold deformation high plasticity, general for bending, rolling, crimping and hammer arch processing, arc welding and contact welding welding performance, gas welding thickness is small, strict shape or complex shape of the parts are prone to cracks. Machinability Cold drawing or normalizing is better than annealing. It is generally used for manufacturing with low stress and high toughness requirements.
â— Chemical composition:
Carbon C: 0.17 to 0.23 Silicon Si: 0.17 to 0.37 Manganese Mn: 0.35 to 0.65 Sulfur S: ≤ 0.035 Phosphorus P: ≤ 0.035 Chromium Cr: 0.25 Nickel Ni: 0.25 Copper Cu: 0.25
â—Mechanical properties:
Tensile strength σb (MPa): ≥410 (42) Yield strength σs (MPa): ≥ 245 (25) Elongation δ5 (%): ≥25 Section shrinkage ψ (%): ≥ 5, Hardness: Not treated , ≤156HB, sample size: sample size 25mm
â— Heat Treatment Specification and Metallographic Organization:
Heat treatment specifications: normalizing, 910°C, air cooling. Metallographic structure: ferrite + pearlite.
â—Delivery status: Delivery with no heat treatment or heat treatment (annealing, normalizing or high temperature tempering). The requirements for the delivery of heat treatment shall be specified in the contract, and those not specified shall be delivered without heat treatment.
20 # steel weight formula: [(outer diameter - wall thickness) * wall thickness] * 0.02466 = kg / meter (weight per meter)
Steel pipe weight formula For example: [(68-4)*4]*0.02466*1=6.31296 (kg/m)
This pipe knowledge is provided by.
The hole saw, also known as the hole saw or hole saw, refers to a special circular saw in the processing of circular holes in modern industry or engineering. It is simple and flexible to operate, convenient to carry, safe and widely used. The hole opener (cutter) is installed on the ordinary electric drill, and it is convenient to cut round holes, square holes, triangular holes, straight lines and curves on the plane and sphere of various plates such as copper, iron, stainless steel and plexiglass.
Hole Saw,Hole Saw Kit,Hole Saw Cutter,Tile Hole Saw
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