A312 TP316L ASTM Welded Longitudinal Finned Pipes With Stainless Steel Fins

Longitudinal Finned Tubes ASTM A312 TP316L Welded Tubes With Stainless Steel Fins

Detailes of ASTM A312 Base Tubes

ASTM A312 This specification covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.

Manufacture: Welded (WLD) pipe shall be made using an automatic welding process with no addition of filler metal during the welding process.

Heat treatment: All pipe shall be furnished in the heat-treated condition in accordance with the requirements 1900°F [1040°C] .

Surface Condition: The pipe shall be free of scale and contaminating exogenous iron particles. Pickling, blasting, or surface finishing is not mandatory when pipe is bright annealed. The purchaser is permitted to require that a passivating treatment be applied to the finished pipe

Tests: Transverse or Longitudinal Tension Test, Flattening Test, Grain Size, Flaring Test, Flange Test, Hardness Test, Hydrostatic Test or Nondestructive Electric Test

Chemical Composition (%)

For small diameter or thin walls or both, where many drawing passes are required, a carbon maximum of 0.040% is necessary in grades TP304L and TP316L. Small outside diameter tubes are defined as those less than 0.500 in. [12.7 mm] in outside diameter and light wall tubes as those less than 0.049 in. [1.20 mm] in average wall thickness (0.044 in. [1.10 mm] in minimum wall thickness).

Mechanical Properties

Definition

Longitudinal finned tubes are produced by resistance welding fins along the long direction of the tube. The fins first form a U-shaped channel so that each leg of the U-shape forms a fin.

Regular base pipe/tube material: carbon / alloy steel (A106, A333, A179, A335 P5, P22, P9, etc.)

stainless steel TP304, TP316L,TP321, etc.

copper alloy CuNi 70/30, CuNi 90/10, etc and other material.

Advantages

1.Reduce the installation space of the required heat transfer surface and at the same time, it has high reliability;

2.Improve the heat transfer efficiency in the effective space;

3.Heat transfer is strengthened to reduce flow resistance and metal consumption,etc.

Application

Generally applicable to power stations or large high-temperature old equipment in the oil industry:

Industrial Furnace

Distillation Tower System

Air Cooled Heat Exchanger

Refining Unit

Petrochemical Separation Equipment

Evaporative Condenser

Closed Circuit Cooling Tower

Waste Heat Boiler

High Temperature Furnace Cooling System

Nuclear Power Plant Heat Exchange System,etc

Specifications For Various Types Of Finned Tubes

Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below :
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube, KL type fin tube), Embedded G type fin tube , Extruded fin tube, low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.