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Seamless 304 Stainless Steel Compression Fittings Elbow For Pipeline Project

Zhengzhou Huitong Pipeline Equipment Co.,Ltd.

Seamless 304 Stainless Steel Compression Fittings Elbow For Pipeline Project

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Brand Name : HT

Model Number : SS 304

Certification : PED/ISO

Place of Origin : China

MOQ : 1pcs

Price : USD 1-30 pcs

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 1000 month

Delivery Time : 5-8 days

Packaging Details : Seaworthy Plywood\wooden Pallets

Product name : stainless steel compression fittings elbow

Application : pipeline project

Packing : Seaworthy Plywood\wooden Pallets

Standard : ANSI JIS DIN ASME

Place of Orig : Henan China

Certificate : ISO9001:2008

Dimensions : Customers'demand

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Seamless 304 Stainless Steel Compression Fittings Elbow For Pipeline Project

1.Difference between SMLS pipe fittings and welded pipe fittings

In general, the quality of seamless stainless steel pipe fittings is better than that of seamless stainless steel pipe fittings, because the seamless stainless steel pipe fittings are made of the accurate cold-rolled sheet that has passed the inspection, so any defect is limited to the welding position. Seamless tube is made of stainless steel by punching, which leads to many tears in the tube wall formed by extrusion. The eddy current test shows that the defective rate of stainless steel tube with seam is usually lower than that of seamless stainless steel tube. Using ultrasonic testing, the background noise of seamless stainless steel pipe is so large that it is difficult to find its defects. However, the background noise of stainless steel pipe with seam is very low, so it is easy to find the defect.

2.About Stainless steel 304:

Dual certified 304/304H is used as a material of construction up to 1500°F. Slight scaling begins at about 1200°F. This is the 0.04% minimum carbon version of type 304 stainless. It has general corrosion resistance similar to the low carbon 304/304L. However, it is subject to carbide precipitation in the heat affected zone (HAZ) of welds. Weldments may be sensitive to HAZ intergranular corrosion in oxidizing acid environments, and to polythionic acid stress corrosion cracking. The carbide precipitation is not harmful to high temperature mechanical properties.
304/304H is welded using the 22Cr 11Ni filler wire (ER308), or covered electrodes (E308). Post-weld heat treatment is not necessary for most high temperature service.
Chemistry

Cr

Ni

C

Mn

Si

P

S

Fe

MIN

18.0

8.0

0.04

MAX

20.0

10.5

0.10

2.0

0.75

0.04

0.03

Balance

Specifications
AMS 5513
ASME SA 240
ASTM A 240, ASTM A 959
EN 1.4301
UNS S30400, UNS S30409
W. Nr./EN 1.4948
Werkstoff 1.4301
Inventory
304 / 304H Plate, 304 / 304H Welding Products
Common Trade Names
304H Stainless
Features
Elevated temperature service to 1500°F
Corrosion resistance similar to 304/304L
Applications
Pressure Vessels
Petrochemical Equipment
Physical Properties
Density: 0.285 lb/inch3
Temperature, °F 212 1600
Coefficient* of Thermal Expansion, in/in°F x 10-6 9.4 –
Thermal Conductivity Btu • ft/ft2 • hr • °F 9.4 10.9
* 70°F to indicated temperature.
Mechanical Properties
Representative Tensile Properties

Minimum

Typical

Ultimate Tensile Strength, ksi

75

90

0.2% Yield Strength, ksi

30

35

Elongation, %

40

60

Maximum Allowable Stresses, ASME Section VIII, Div 1 Temperature, °

Temperature, °F

200

400

600

800

1000

1200

1400

1500

stress, ksi

20.0

18.3

16.6

15.2

14.0

6.1

2.3

1.4

1.Quality assurance system:

Seamless 304 Stainless Steel Compression Fittings Elbow For Pipeline Project

2.Packaging and transportation:

Seamless 304 Stainless Steel Compression Fittings Elbow For Pipeline Project


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