Ms seamless pipe hs code

Low carbon steel, also known as mild steel, carbon content from 0.10% to 0.30% low carbon steel is easy to accept a variety of processing such as forging, welding and cutting, often used in the manufacture of chains, rivets, bolts, shafts, etc. Carbon content is less than 0.25% of carbon steel, because of its low strength, low hardness and soft, it is also known as mild steel. It includes most common carbon structural steel and a part of high quality carbon structural steel, mostly without heat treatment for engineering structural parts, some by carburizing and other heat treatment for wear-resistant mechanical parts.

Ms seamless pipe is divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, other steel pipes, but also includes carbon thin wall steel pipe, alloy thin wall steel pipe, stainless steel pipe, special-shaped steel pipe.

The outer diameter of hot rolled seamless pipe is generally greater than 32mm, the wall thickness is 2.5-75mm, the diameter of cold rolled seamless steel pipe can be 6mm, the wall thickness can be 0.25mm, the outer diameter of thin wall pipe can be 5mm, the wall thickness is less than 0.25mm, the cold rolling is higher than the hot rolling size accuracy. Cold rolling actually refers to the cold processing of steel plate or steel strip into various types of steel at room temperature through cold drawing, cold bending, cold drawing and other cold processing.

Advantages: forming speed, high yield, and do not damage the coating, can be made into a variety of section forms, to meet the needs of the use of conditions; Cold rolling can produce large plastic deformation of steel, thus increasing the yield point of steel.

	HS Code	Description
MS seamless  pipe	7306309000	Other , welded ,of circular cross-section ,of iron or non-alloy steel,the external diameter exceeding 10mm but not exceeding 406.4mm
	7306500000	Other, welded, of circular cross-section,of other alloy steel , the external diameter of which not exceeds 406.4mm
Carbon steel pipe	7304191000	Tubes, pipes of iron or steel,having an outside diameter of 215.9mm or more but not exceeding 406.4mm , (line pipe of a kind used for oil or gas pipelines )
	7304319000	Other tubes or pipes , of circular cross-section, cold-drawn or cold-rolled , of iron or non-alloy steel
	7304399000	Other tubes or pipes ,of circular cross-section, of iron or non-alloy steel (not cold-drawn or cold-rolled )
	7304592000	Geological casing and drill pipes , of other alloy steel ( not cold-drawn or cold-rolled )
	7306900090	Other tubes, pipes and hollow profiles,not elsewhere specified or included
Seamless carbon steel pipe	7304311000	Boiler tubes and pipes, cold-drawn or cold-rolled , of iron or non-alloy steel
	7304319000	Other tubes or pipes , of circular cross-section, cold-drawn or cold-rolled , of iron or non-alloy steel
	7304311000	Boiler tubes and pipes, cold-drawn or cold-rolled , of iron or non-alloy steel
	7304199000	Other tubes, pipes of iron or steel(line pipe of a kind used for oil or gas pipelines )
	7304199000	Other tubes, pipes of iron or steel(line pipe of a kind used for oil or gas pipelines )