Ethylene Pyrolysis Tube

• Condition: New
• Certification: CE, RoHS, GS, ISO9001
• Standard: DIN, ASTM, GB, ANSI
• Customized: Customized
• Material: Alloy
• Application: Cgl (Continuous Hot DIP Galvanizing Line),Plating
• Model NO.: Ethylene pyrolysis tube
• Surface Roughness: Ra6.3
• Machining Tolerance: +/-0.01mm
• Transport Package: Wooden Case
• Specification: Outer diameter: 55mm-2000mm or customized
• Trademark: HEXIN
• Origin: China
• HS Code: 85149090
• Production Capacity: 5000pieces/Year

Product Description

Qingdao Hexin Machinery Co., Ltd. are professional Centrifugal Casting Sink Roll for Continue Galvanizing Line, Centrifugal Casting Sink Rolls, Centrifugal Casting Rolls, Stabilizer rolls, Furnace rolls for plate heating furnace,  Rolls for CAL, Water cooled rolls, Coated rolls manufacturer from China.

Qingdao Hexin Machinery Co., Ltd. produces furnace bottom rolls,which it adopt the centrifugal casting, precisely casting technology on journal bell mouth, shaft head with forging process. It can be transported with using professional wood packaging to the packing, its excellent quality has won high praise at home and abroad.

The tube and coil for ethylene cracking furnace is suitable for cracking furnaces, which are to be used to carry out the cracking reaction of hydrocarbons. 
The typical requirement to the cracking furnace is:
1. the reactant can be quickly heated to 700~90CTC to ensure the equilibrium yield of ethylene, and heat supply and heat transfer need to be guaranteed; 
2. the medium residence time is short, reducing the coke in the cracking process
3.  suitable high temperature resistant materials. 
Due to the differences in the raw materials used for cracking and the method of providing the heat required for cracking, different types of cracking furnaces are used, such as regenerative cracking furnaces, sand furnaces and tubular cracking furnaces. 
The most widely used and the most mature technology is the tubular cracking furnace.
In the past, the cracking tube generally use HK-40 alloy steel containing 20% ??nickel and 25% chromium as the material of the cracking reaction tube, which can withstand high temperature of 1050 °C. 
Due to the technical requirements to further improve the thermal strength of the furnace tube surface, after the 1970s, HP-40 alloy steel containing 35% nickel and 25% chromium was used, which can withstand high temperatures of 1100 °C.
The diameter of the reaction tube is 2-7in (1in is equal to 2.54cm), it is made by centrifugal casting, and the interior is machined flat to reduce coking during the reaction. 

Item	Ethylene pyrolysis tube
Process	Centrifugal/spun casting method for roll body, precision casting of assembly shaft head.
Material	316L,316,HK,HT,HU,HP,HH,ZG40Cr25Ni20Si2,ZG14Ni32Cr20Nb,ZG45Ni48Cr28W5Si2.
Application	The heat treatment furnace roll are usually used for normalizing furnace and hardening furnace, under the hydrogen nitrogen protective environment, Furnace temperature is about 900 ºC. CGL (Continuous hot dip galvanizing line),Plating aluminizing line, Plating silicon line.
Specifications	Outer diameter: 55mm-2000mm Length: as per your request
Test	Chemical analysis by spectrometer for each heat,eddy current test,pressure test ,thickness test , PT 100%(liquid penetrant test),VI(visual inspect)100%,dimensional check.
Products	Sink rolls Stabilizer rolls Furnace rolls for plate heating furnace Rolls for CAL Water cooled rolls Coated rolls

About us

Qingdao Hexin Machinery Co., Ltd. is professional for manufacturing, sale and research of high temperature alloy centrifugal cast tube, Heat resistant steel precision castings and sand mold casting.
The main products are: Ethylene cracking furnace furnace tube, reformer furnace tube, all kinds of casting alloy elbow, casting tube sheet, hook, hanger, bracket and other heat resistant casting products. Furnace rollers, radiant tubes, sink roll, stabilizing roll, support arm and sleeve and other heat resistant alloy used for continuous galvanizing line(continuous annealing line), all kinds of heat treatment fixtures used for heating processing equipment, like tray, basket, fan and so on. Widely used for famous brand heat treatment equipment, such as IPSEN, AICHELIN, FONTON, etc.
We committed to the strict quality control and strictly implement ISO9000 series quality management system, Ensure the castings in each process of each station "zero defect" production, Quality has won the acceptance of customers at home and abroad.
Welcome to view our website: hexinmachineryqd.en.made-in-china.com