Seamless Hydraulic Tube----Vary Standard Presentation

Seamless Hydraulic Tube----Vary Standard Presentation

http://www.ts-aceroinoxidable.com/html/down/hydraulictube3.html

I: DIN Standard series

  Standard Name

1、    DIN 17175-1979 Heat-resisting seamless steel tube, technical delivery conditions

2、   DIN 17176-1990 Round seamless steel tube used for compressed hydrogen, technical delivery conditions

3、   DIN 17179-1986 Fine grained structural seamless steel with special requirements, technical delivery conditions

4、   DIN 17204-1990 Quenching and tempering treatment of seamless steel tube, technical delivery conditions

5、   DIN 17456-1999 Stainless steel tube with general requirements, technical delivery conditions

6、   DIN 2391-1-1994 Seamless precision steel tube Section 1: size

7、   DIN 2391-2-1994 Seamless precision steel tube Section 2: technical delivery conditions

8、   DIN 2393-1-1994 Precision welded steel tube with special dimensional precision

9、   DIN 2393-2-1994 Precision welded steel tube with special dimensional precision Technical delivery conditions

10、 DIN 2394-1-1994 Precision welded steel tube Size

11、 DIN 2394-2-1994 Precision welded steel tube Technical delivery conditions

12、 DIN 2395-1-1994 Precision welded steel tube with rectangular or square section Size

13、 DIN 2395-2-1994 Precision welded steel tube with rectangular or square section Technical delivery conditions

14、 DIN 2395-3-1981 Precision electric welded steel tube with rectangular or square section Technical delivery conditions of the steel tubes used for automobile manufacturing

15、 DIN 2413-2-1993 Calculation of internal pressure resisting wall thickness of steel tube

16、 DIN 2445 Bbi-2000 Seamless steel tube subjected to dynamic loading, calculation principles of straight Tube

17、 DIN 2448-1981 Size, unit, length and quality of seamless steel tube

18、 DIN 2470-1-1987 Steel gas tube with the allowable work pressure of below 16bar, requirements on the parts of tube

19、 DIN 2470-2-1987 Steel gas tube with the allowable work pressure of over 16bar, requirements on the parts of tube

20、 DIN 2916-1975 Bending radius and design drawings of seamless and welded steel tube

21、 DIN 2917-1982 Seamless steel tube used for heat steam tube and reservoir

22、 DIN 43614-2-1980 Requirements on the tubes used for electric switch device and compressed air tube and stainless tube

23、 DIN 50192-1977 De-carbonization layer depth measuring

24、 DIN 73000-1986 Jet tube used for the oil jetting device of internal combustion engine

25、 DIN 86009-1986 Exhaust pipe and steel tube used for ship

26、 DIN 86288-1989 Tubes used for ship and buildings on ship, steel tube with seat, shaped tube and shaped component used for ship manufacturing

27、 DIN EN 10216-5-1999 Technical delivery conditions of seamless steel tube used for pressure purpose

28、 DIN EN 10240-1998 Specifications for internal and external protection coatings of steel tube and heat zinc coating applied to automation factory

29、 DIN EN 10246-7-1996 Nondestructive testing of steel tube Section 7: Automatic ultrasonic test on the seamless steel tube

30、 DIN EN 10256-2000 Nondestructive testing of steel tube: qualification and ability of level-1 and level-2 nondestructive testing persons

31、 DIN EN 10297-1-2003 Seamless steel tube used for machinery and common use Technical delivery conditions Section 1: Un-alloy and alloy steel

32、 DIN EN 10305-1-2003 Seamless precision steel tube Technical delivery conditions Section 1: Cold-drawn seamless steel tube

33、 DIN EN 10305-2-1998 Technical delivery conditions of precision steel tube Section 2: Cold-drawn welded steel tube

34、 DIN EN 10305-3-1998 Technical delivery conditions of precision steel tube Section 3: Cold-rolled welded sizing steel tube

35、 DIN EN 10305-4-1998 Technical delivery conditions of precision steel tube Section 4: Cold-drawn welded steel tube used for hydraulic and pneumatic system

36、 DIN EN 10305-5-2000 Technical delivery conditions of precision steel tube Section 5: Welded and cold-shaped rectangular or square tube

37、 DIN EN 4235-4-1994 Technical delivery conditions of avigation and steel products Section 4: Steel tube

38、 DIN ISO 8535-1-1995 Steel tube used for compression ignition engine and high-pressure jet fuel tube Section 1: Technical requirements on cold-drawn single-wall steel tube

II: GB Standard series

  Standard Name

1、   GB/T17395-1998 Size, appearance, weight and allowable deviation of seamless steel tube

2、   GB/T8162-1999 Seamless steel tube used for structure

3、   GB/T14975-2002 Stainless seamless steel tube used for structure

4、   GB/T8163-1999 Seamless steel tube used for fluid transportation

5、   GB/T14976-2002 Stainless seamless steel tube used for fluid transportation

6、   GB/T3090-2000 Stainless small-diameter steel tube

7、   GB/T3089-1982 Stainless acid-resisting thin-wall seamless steel tube

8、   GB/T3639-2000 Cold-drawn or cold-rolled precision seamless steel tube

9、   GB/T3094-2000 Cold-drawn seamless shaped steel tube

10、 YB/T5035-1993 Seamless steel tube used for half-shaft casing for automobile

11、 GB/T5312-1999 Cold-drawn carbon steel and carbon-manganese steel seamless tube used for ship

12、 GB/T3093-2002 High pressure seamless steel tube used for diesel engine

13、 GB/T8713-1988 Precise internal diameter seamless steel tube used for hydraulic and pneumatic cylinder

14、 GB3087-1999 Seamless steel tube used for low and medium pressure boiler

15、 GB5310-1995 Seamless steel tube used for high pressure boiler

16、 GB13296-1991 Stainless seamless steel tube used for boiler and heat exchanger

17、 GB6479-2002 High pressure seamless steel tubes used for fertilizer facility

18、 GB9948-1988 Seamless steel tubes used for petroleum cracking

19、  YB/T5052-1993 Seamless steel tube used for drilling diamond core

20、 GB/T17396-1998 Hot-rolled seamless steel tube used for hydraulic pillar

III: Foreign advanced standard series

        Standard Name

1、   JIS G 3445-1988 Carbon-steel steel tube used for mechanical structure

2、   JIS G 3454-1988 Carbon-steel steel tube used for pressure tubing

3、   ASTM A556/A556M-90a Cold-drawn carbon-steel seamless steel tube used for water supply heater

4、   ASTM A106-1991 Carbon-steel seamless steel tube used for high-temperature operation

5、   ASTM A179/A179M-1990a（2001） Specifications of cold-drawn low-carbon seamless steel tube used for heat exchanger and condenser

6、   NF A49-210-1985 Size and technical delivery conditions of cold-drawn seamless steel tube used for liquid transportation

7、   BS EN 10216-1-2002 Seamless steel tube Technical delivery conditions Section 1: Un-alloy steel tube under specified ambient temperature

Galvanized Steel Sheet-----Pre-painted Galvanized Steel Sheet

Galvanized Steel Sheet-----Pre-painted Galvanized Steel Sheet

 http://www.ts-aceroinoxidable.com/html/down/galvanizedsteel1.html

Pre-painted Galvanized plate refers that when the surface pretreatment of base plate, covering one layer or 2 layers (more than 2 layers once necessary) organic coating on the surface with the tactic of continuous roller coating; so conduct drying and activity.

Compared with single half spraying or brushing on the surface of forming metal, the coating quality of color-coated plate is additional uniform, stable and ideal. Pre-painted plate is characterised of wonderful decoration, mould ability, corrosion resistance, robust coating adhesive force and may keep the novel luster for a protracted time. Since color-coated plate has not solely mechanical strength and shaping performances of plate, however additionally favorable decoration and corrosion resistance of organic material. It will understand extremely effective construction and husband the energy; stop the pollution caused by second method and alternative favorable economic edges. Currently, it\'s become the best stuff in construction, appliance, lightweight trade, machinery and physical science and alternative industries.

Main application

• Doors : Security door,garage door,in-house door,Shutter door .
• Furniture :Steel and picket furnishings,wardrobe,table,chair,tea table,change cupboard,archive cupboard,bookshelf,office cupboard,etc.
• Offices :Copier cupboard,vendor,computer case,switch board,instrument cupboard,tool box,inner decoration for raise,etc.
• Decorations : laptop ronnm,telephone closet,parking heap,waiting booth,wall,column,surface end of wall,Persian blinds with picket grains,and rooms in traveler liner,entertainment partitions and clean panels for pharmaceutical manufacturing plant and foodstuff manufacturing plant.
• Household appliances : white goods,ice cuber,washing machine,air conditioner,electric fan,lamps,solar-energy hot-water heater,electric hot-water heater,etc.
• Transport : Inner decoration panel of auto,train’s partition and internal decoration panel,ship’sparting panel and internal decoration panels,etc.
• Building :Internal and external walls,steel and plastic panel,aluminum and plastic panel,roof,partition,suspended ceiling,ceiling,door head,plant’swall panel,movable house,urban utility fence,booth,garage,ventilation duct,etc.

Finned Tube----Hair Pin Type Heat Exchanger

Finned Tube----Hair Pin Type Heat Exchanger

http://www.ts-aceroinoxidable.com/html/down/finnedtube15.html

The Hair pin Type Heat Exchanger is a true counter-current flow and are especially suitable for extreme temperature crossing, high pressure, high temperature, and low to moderate surface area requirements. Hairpin heat exchanger designs can increase heat transfer coefficients in single-pass process streams with high temperature differentials.Heat exchanger consists of a pair of concentric tubes. One of the fluids used for heat exchange flows in the inner tube, and the other in the annular space between the two tubes.Our Hairpin Exchangers are available in single tube (Double Pipe) or multiple tubes within a hairpin shell , bare tubes, finned tubes, U-tubes, straight tubes, fixed tube sheets and removable bundle. Hairpin heat exchangers utilize true counter-current flow. When a process calls for a temperature cross, a hairpin heat exchanger is the most efficient design, with fewer sections and less surface area. Hairpin heat exchangers offer the mechanical and maintenance engineer advantages inherent with their design.

Hair Pin Type Heat Exchanger Advantages

• Lower cost
• Mobile exchanger
• Small size and good position in the vat
• Good heat exchange coefficient
• Little fur deposit thanks to the polished finish
• Good fluid circulation in the tube
• Vinification of reds or whites
• Independent tubesheets for high terminal temperature differences.
• Thermal shock.
• Cycling.
• Long radius U-bends for effective thermal expansion.
• High temperature differences.
• Ease of cleaning.
• All-welded baffle cages for durability.
• High pressure closures for pressures
• No internal bolting.

Hair Pin Type Heat Exchanger Applications

• Temperature Cross
• High Tubeside Pressure
• Low Flowrates
• Cyclic Service
• Dirty Service
• Heating or Cooling Vapors
• Slurry applications with minimum velocity requirements and no "dead space" velocity reductions.
• Complete Vaporization Requirements
• Exchangers subject to Thermal Shock
• High Terminal Temperature Differences
• System requiring a moderate quantity of heat exchange with low flow rates
• System with temperature ranges requiring a perfect countercurrent flow.
• 
  

Stainless steel----highly alloyed austenitic stainless steel 310S (S31008)/ EN 1.4845

Stainless steel----highly alloyed austenitic stainless steel 310S (S31008)/ EN 1.4845 

Introduction: SS310 is a highly alloyed austenitic stainless steel designed for elevated-temperature service. The high Cr and Ni contents enable this alloy to resist oxidation in continuous service at temperatures up to 1200°C provided reducing sulfur gases are not present. In intermittent service it can be used at temperatures up to 1030°C as it resists scaling and has a relatively low coefficient of expansion. This alloy has superior resistance to both SS304 and SS309 in carburizing and reducing environments. 

SS310 types are used for their high-temperature oxidation resistance for applications such as furnace parts, mufflers, radiant tubes, ammonia converters, etc.

Product Range: 

Product is available in Cold Rolled, Continuous Mill Plate and Plate Mill Plate form up to 60" wide in various thicknesses. 

For inquiry about minimum quantity, specific thickness and tolerances.  

Certification: ASTM A240, A480, A666, ASME SA240, SA480, SA666, ASTM A262, EN 10088-2, EN 10028-7.

Thermal Processing & Fabrication Annealing

Annealing is achieved by heating to between 1030°C and 1150°C for 90 minutes per 25mm thickness followed by water quenching. Annealing will ensure that any carbide precipitates are taken back into solution. 

Cold Working

SS310 can be deep drawn, stamped, headed and upset without difficulty. Since SS310 work hardens, severe forming operations should be followed by annealing.  

Hot Working

SS310 can be forged, hot headed and upset satisfactorily. Uniform heating of the steel in the range of 1150°C and 1250°C is required. The finishing temperatures should not be below 950°C. Forgings should be cooled rapidly in air or water. As precipitation of carbides can be harmful in corrosive environments, SS310S is recommended. 

Welding

SS310 can be satisfactorily welded and brazed by all methods, giving a tough weld. SS310S should be specified if carbide precipitation can have a detrimental effect on the performance of the steel under operating conditions. 

Welding procedures for SS310 will have to be selected with care in order to avoid hot cracking due to the fully austenitic weld microstructure obtained from using matching filler metals.  

Oxidation 

In many processes, isothermal (constant temperature) conditions are not maintained and process temperatures vary. Expansion differences between the base metal and the scale during heating and cooling can cause cracking and spalling of the protective scale. 

This allows the oxidizing media to attack the exposed metal surface. The spalling resistance is greatly improved with the higher nickel content of SS310 because nickel reduces the expansion differential between the scale and the base metal. 

Corrosion Resistance

Because of the many possible variations involved—temperature, corrosive environment, alloy composition, time, operating practice, etc.—it is difficult to discuss every combination in detail. Thus, the following data should be used as a guideline. 

Effect of atmosphere

An increase in corrosion rate can be expected in the presence of water vapor for the traditional 18/8 type stainless steels. The increased nickel and chromium contents of SS310 provide good resistance to moist air at temperatures in excess of 980°C. 

Flug Gases 

It is extremely difficult to generalize corrosion rates in flue and process gases since gas composition and temperature may vary considerably within the same process unit.  

Combustion gases normally contain sulfur compounds, as sulfur dioxide is present as an oxidizing gas, along with carbon dioxide, nitrogen, carbon monoxide and excess oxygen. Protective oxides are generally formed and, depending on exact conditions, the corrosion rate may be similar or slightly greater than for service in air.

Reducing flue gases contain varying amounts of hydrogen sulfide, hydrogen, carbon monoxide, carbon dioxide and nitrogen. The corrosion rates encountered in these environments are sensitive to hydrogen sulfide content and temperature, and satisfactory material selection often necessitates service testing. The high nickel content of SS310 may be deleterious in some instances due to sulfidation, in which case SS309 may be the preferred material. 

Carburisation 

High chromium and nickel contents result in a slower diffusion rate of carbon into the steel. SS310 therefore has good resistance to carburizing atmospheres. 

Ammonia and Nitrogen 

The high nickel content of CS310 ensures a good resistance to ammonia atmospheres at high temperatures. Typical corrosion rates for SS310 in an ammonia converter containing 5-6% NH3 after 30,000 hours at 500°C, are in the region of 0.003mm/yr. 

Stainless steel----12Cr13 stainless steel band introduced

Stainless steel----2Cr13 stainless steel band introduced

2Cr13 Definitions

2Cr13 stainless steel cold-rolled steel made ​​by the ordinary , including ordinary carbon steel , low alloy steel strip , bright ordinary carbon steel , plain carbon steel slitting , slitting low-alloy steel, steel trolleys , playing steel tape, flashlights steel, steel tube , steel cables . Mainly used for a variety of structural parts and special products .

2Cr13 Type

Hot-rolled steel 2Cr13 : from a variety of high quality hot rolled steel strip made ​​. Which are commonly used spring steel watches , watches shell steel, chrome steel , such as aluminum .

Cold-rolled steel 2Cr13 : made ​​from a variety of high-quality cold-rolled steel with carbon structural steel, steel tape measure , mechanical chain steel, carbon tool steel, alloy structural steel , spring steel , alloy tool steel belt, ball bearing steel, stainless steel, high-speed tool steel , iron steel, silicon steel, nickel-chromium steel , precision alloy steel belt. Use high-quality sheet steel and similar purposes .

2Cr13  Use

2Cr13 stainless steel because of its unique hardness it is widely used in the development of mold , tool material, conventional gaskets, packing Crust and other metal stamping industries.2Cr13 stainless steel vacuum equipment suitable furnace, oil quench hardening, annealing , normalizing heat treatment process .Hardness can reach HRC52-65 degrees. Metal stamping industry to meet our needs .

2Cr13 stainless steel with chemical elements

Carbon C          0.36 ~ 0.45

Si Si                  ≤ 0.60

Manganese Mn ≤ 0.80

Sulfur S             ≤ 0.030

Phosphorus P     ≤ 0.035

Chromium Cr    12.0 ~ 14.00

Ni Ni                ≤ 0.60

2Cr13 stainless steel heat treatment process

Workpiece quenching processGeneral workpiece : quenching and tempering → ​​→ → washing sand ( or shot , etc. ) surface cleaning → ​​test . Shaft parts and deformation of the workpiece : quenching and tempering washing → → → → straightening → ​​blast → to deal with stress test

2Cr13  Mechanical Properties

Tensile strength σb (MPa): quenching and tempering , ≥ 635Conditions yield strength σ0.2 (MPa): quenching and tempering , ≥ 440Elongation δ5 (%): quenching and tempering , ≥ 20Reduction of area ψ (%): quenching and tempering , ≥ 50Impact energy Akv (J): quenching and tempering , ≥ 63Hardness: annealing , ≤ 223HB; quenching and tempering , ≥ 192HBHeat treatment and microstructure specifications
Heat treatment specifications:1 ) annealing , 800 ~ 900 ℃ slow cooling or rapid cooling to about 750 ℃ ​​;2 ) quenching , 920 ~ 980 ℃ oil cooling ;3 ) Tempering , 600 ~ 750 ℃ ​​rapid cooling .Microstructure: Organizing for the martensitic .

2Cr13  Delivery status

Generally to heat treatment delivery , treatment types specified in the contract ; not indicated, by not heat treatment delivery.