ASTM A358 Class 1 Inoxidable Steel  Welded Pipe Tube1.4404 SS Pipe Welding

Inoxidable Steel  Welded Pipe Tube is an austenitic metal, meaning that it doesn't hold or attract magnets. This makes it a popular choice for moving parts and instruments. This product is widely used in food, chemical, paper, dye, marine and pharmaceutical industries. It is made with high amounts of chromium, molybdenum and nickel, which makes it much tougher and more resistant to corrosion than 304 steelers. It is known as marine grade steel because it doesn't corrode when used for parts that are placed in warm sea waters. This is why it's commonly used for boat fittings and valves. 316L stainless steel can also be used in chloride environments and high heat.

316L alloys have great weldability, machinability and formability. It can't be made hardenable using heat treatment. Annealing can be done after forging and cold working this metal, which should be done at temperatures between 1900 and 2100 degrees F. Afterward, it should be rapidly quenched. This grade of metal can be deep drawn. Other methods of cold working can be used as well, such as swaging, roll forming, bending and cold heading. In order to relieve stresses caused by severe cold forming, annealing should be used.

Welding this metal can be performed using all standard fusion methods. Filler metals can be used for welding 316L metal. Post-weld annealing isn't needed for the heavy welded sections, like with the 316 grade of steel. When annealing this metal, it's important to watch for distortion and warping. Forging can be done at temperatures between 2100 and 2300 degrees F, but no lower than 1700 degrees F. A final anneal should be done to maintain high corrosion resistance after forging is complete.

Welded Stainless Steel Pipe

• ASTM A312

• Grades 304/L and 316/L

• Sizes 1/4" Thru 36"

• Schedules 10s, 20, 40s, 80s

 

Grade 316L is very similar to 316 stainless steel. It is still considered a molybdemum-bearing grade and has properties that make it highly resistant to corrosive degradation. 316L grade stainless steel differs from 316 in that contain lower levels of carbon. The decreased level of carbon in this stainless steel makes this grade immune from sensitisation or grain boundary carbide precipitation. Because of this unique property, Grade 316L tends to be commonly used in heavy gauge welding situations. Additionally the lower carbon levels make this grade easier to machine. Like 316 stainless steel, 316L because of its austenitic structure is extremely tough, even in the most extreme of temperatures.

 

Chemical Formula

 

Carbon .03%, Manganese 2.00%, Phosphorus .045%, Sulfur .030%, Silicon .75%, Chromium 16-18.00%, Nickel 10.00-14.00%, Molybdenum 2.00-3.00%, Nitrogen-.10%, Iron- Balanced

 

Features

 

• 316L Stainless Steel is easily welded by all commercial processes. If forging or hammer welding it is recommended to anneal after these processes to help avoid unwarranted corrosion.

• Not hardenable by heat treatment, however often cold working the alloy has proven to increase hardness and tensile strength.

• Sometimes know by industry professionals as marine grade stainless for its uncanny ability to resist pitting corrosion.

 

Applications

 

316L Grade Stainless Steel is one of the more common austenitic stainless steels. Because of its outstanding toughness against corrosion you can typical find 316L Stainless used in the following applications: food preparation equipment, pharmaceutical, marine, boat fittings, and medical implants (i.e- orthopaedic implants)

 

ASTM A312/A358, Stainless Steel Pipes

 

• MINAL




• DIAMETER NPSOUTSIDE




• DIAMETER(MM)SCH-5S




• WALL THICKNESS(MM)SCH-10S




• WALL THICKNESS(MM)SSCH-40S




• WALL THICKNESS(MM)

1/4	13.72		1.65	2.24
3/8	17.15		1.65	2.31
1/2	21.34	1.65	2.11	2.77
3/4	26.67	1.65	2.11	2.87
1	33.40	1.65	2.77	3.38
1 1/4	42.16	1.65	2.77	3.56
1 1/2	48.26	1.65	2.77	3.68
2	60.33	1.65	2.77	3.91
2 1/2	73.03	2.11	3.05	5.16
3	88.90	2.11	3.05	5.49
3 1/2	101.60	2.11	3.05	5.74
4	114.30	2.11	3.05	6.02
5	141.30	2.77	3.40	6.55
6	168.28	2.77	3.40	7.11
8	219.08	2.77	3.76	8.18
10	273.05	3.40	4.19	9.27
12	323.85	3.96	4.57	9.53
14	355.60	3.96	4.78	9.53
16	406.40	4.19	4.78	9.53
18	457.20	4.19	4.78	9.53
20	508.00	4.78	5.54	9.53
22	558.80	4.78	5.54
24	609.60	5.54	6.35	9.53
30	762.00	6.35	7.92
32 | 80	812.8 | 2032.0	(Thickness):6.35~30mm Nominal diameter and wall thickness subject to the approval of vendor and purchaser