furniture black steel pipe 1 Size: OD, 18-120mm WT, 1.2-18mm 2 Material, low carbon steel 3 Annealed cold drawn

Annealing Cold Drawn Seamless  furniture black steel pipe

Specification & Commodity

1. Standard: ASTM A 501, ASTM A519, ASTM A106, ASTM A53, GB/T 8162, GB/T8163......

2. Material: 10#, 20#, 1020, C22, 1045, C45, 1010, CK10, Q195, Q235, Q345B, S185, S235JR, E235B......

3. Sizes

OD: 18-120mmWT: 1.2-18mmLength: 2-12m or according to your requirement.

4. Application: 

PlumbingTap waterPipe lines transporting gas or liquid over long distancesStructural steel use, As components in mechanical systems such as:High temperature or pressure manufacturing processesRollers in conveyor beltsCompactorsBearing casingDelivery of fluidsDelivery of bulk solids

5. Cold drawing process

Cold drawing, a metalworking process which uses tensile forces to stretch metal. For pipe, line, bar and tube drawing the stock is drawn through a die to reduce its diameter and increase its length. Cold drawn or cold drawing is usually done at room temperature, which is classified as a cold working process.Tube cold drawing or cold drawn process is mainly used to decrease the diameter, improve surface finish and improve dimensional accuracy. A mandrel may or may not used depending on the specific process used.Drawing can also be used to produce a cold formed shaped cross-section. Cold drawn cross-sections are more precise and have a better surface finish than hot extruded parts. Inexpensive materials can be used instead of expensive alloys for strenth requirements, due to work hardening.

6. Annealing process

The most common annealing process within our factory is NormalizationNormalization is an annealing process in which a metal is cooled in air after heating in order to relieve stress.It can also be referred to as: Heating a ferrous alloy to a suitable temperature above the transformation temperature range and cooling in air to a temperature substantially below the transformation range.This process is typically confined to hardenable steel. It is used to refine grains which have been deformed through cold work, and can improve ductility and toughness of the steel. It involves heating the steel to just above its upper critical point. It is soaked for a short period then allowed to cool in air. Small grains are formed which give a much harder and tougher metal with normal tensile strength and not the maximum ductility achieved by annealing. It eliminates columnar grains and dendritic segregation that sometimes occurs during casting. Normalizing improves machinability of a component and provides dimensional stability if subjected to further heat treatment processes. 7. Suppliy Ability1800 MT / Month8. Surface and end treatmentCold drawn bright surfaceAnnealing surface with small grainsSteel pipe ends deburring and round chamfering 9. PackageNude Bundles with weaving bags wrapping outsideCanvas Packing BundlesPackage according to your requirementsEtc......10. Weight calculation methodWeight per piece=(OD-Thickness) * Thickness * Length * 0.0246611.  YIDA is mainly manufacturing in all kinds of low carbon steel pipe, such as:Regular shape seamless steel pipe / tubeRound seamless steel pipe / tubeTriangle seamless steel pipe / tubeSquare seamless steel pipe/ tubeHexagon seamless steel pipe / tubeOctal seamless steel pipe / tubeDodecagon seamless steel pipe / tube......Irregular shape steel pipe / steel barHollow shaft with keywaySolid shaft with keywayHexagon steel bar......Other shapes according to your design......12. ISO 9001 Management System Certification13. Product pictures