Product Description

Type 316/316L Stainless Steel Pipe Factory:

Holic Oil Pipeline Co., LTD.

Type 316/316L Stainless Steel Pipe Basics:

Austenitic stainless steel alloy 316 / 316L is a molybdenum-bearing grade. The high nickel and molybdenum content in these pipes offer better overall corrosion resistant properties compared to 304 grade SS. This resistance is particularly useful regarding pitting and crevice corrosion in chloride environments. Moreover, 316 / 316L stainless steel tubes and pipes demonstrate exceptional high temperature tensile, creep, and stress-rupture strengths. Formability and weldability is also excellent. Unlike grade 316, 316L pipes are immune from sensitization, due to lower carbon content. Thus, it is commonly used in heavy gauge welded components.

Item Name: 316/316L Stainless Steel Pipe.

What is Stainless Steel Pipe?

Stainless steel refers to the alloy steel which can resist the corrosion of weak corrosive medium such as air, steam, water and chemical corrosive medium such as acid, alkali and salt. The corrosion resistance of stainless steel depends on the alloy elements contained in the steel. The basic alloy elements of stainless steel include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc.

Stainless steel belongs to alloy steel, a kind of high alloy steel, which contains a lot of chromium, enough nickel and a certain amount of titanium. The role of chromium is to make the steel corrosion resistant, and the role of nickel is to reduce the austenitizing temperature of stainless steel. The total content of alloy elements can reach 10-28%, so it is a high alloy steel.

Advantages of stainless steel pipes

• Luster and Polishing surface

Our stainless steel is polished to ensure quality.

• Corrosion resistance

When the content of chromium atom in steel is not less than 12.5%, electrochemical corrosion can be prevented. Most stainless steel products are required to have good corrosion resistance, such as tableware, kitchen utensils, water heaters, water dispensers, etc. Some foreign buyers also test the corrosion resistance of the products.

• Excellent Solderability

Most of the finished products of stainless steel must have good weldability. Therefore, our stainless steel supplier can provide you with stainless steel with good weldability.

• Heat resistance

Stainless steel still has good physical and mechanical properties at high temperature.

Usage of stainless steel pipe

Although stainless steel pipes are higher cost to sources, according to its outstanding characteristics such as strength, anti rust, corrosion-resistance, stainless steel pipes have been applied in many industries and domains below

• Medical industry,
• Food and catering sector,
• Automotive and transportation industry,
• Construction and architecture domain,
• Energy and heavy industries.

316 / 316L SEAMLESS TUBE PROPERTIES

The following sections describe the properties of 316 / 316L stainless grade pipes supplied by Holic Oil Pipeline Co., LTD:

Corrosion Resistance:

• Better resistant in many atmospheric environments and various corrosive media compared to grade 304.
• Resistant to stress corrosion cracking above about 122°F (50°C).
• Good resistant to pitting and crevice corrosion in warm chloride environments.
• Corrosion resistance to potable water at ambient temperature range is up to 1000mg/L of chlorides. This reduces to about 500mg/L at 140°F.
• 316 / 316L is commonly known as “marine grade stainless steel”, although it is not resistant to warm sea water.

Heat Resistance:

• Exceptional oxidation resistance in continuous service to 1700°F (925°C) and in intermittent service to 1600°F (870°C)
• Fair resistance to carbide precipitation.

Welding Characteristics:

• Excellent weldability by all standard fusion methods.
• Unlike grade 316 metric tubes and pipes, post-weld annealing for maximum corrosion resistance is not required.

Heat Treatment:

• Grade 316 l 316L steel pipes cannot be hardened by heat treatment.
• Annealing temperature range is 1900 (1038°C) to 2100°F (1149°C).

PROCESSING:

Hot Forming

• Recommended maximum forging temperature for 2100°F to 2300°F.
• It is not advised to forge the alloys at temperatures below 1700°F (927°C).
• The alloys can provide best corrosion resistance If annealed after forging.

Cold Forming

• Alloys 316 / 316L steel pipes can be easily cold worked such as roll form, swaging, cold heading, deep drawing, bent, etc. due to extremely tough and ductile properties.
• Severely cold formed parts should be annealed to remove stresses.

Machinability:

• These pipes are somewhat difficult to machine because of their toughness.
• Grade 316 / 316L steel pipes are subject to chip breaking. Hence, chip breakers and curlers are advised to be used for achieving best machining results.
• Large cutting tools and great amounts of cutting fluid must be used for the same.
• Heavy positive feeds at low speeds are recommended as 316 / 316L harden rapidly after work.

Applications:

316 / 316L stainless steel pipes are majorly used for following applications:

• Condensers, evaporators, and tanks
• Chemical processing equipment
• Food preparation equipment,
• especially in chloride environments
• Pollution control equipment
• Boat fittings, value and pump trims
• Rubber, plastics, pulp & paper machinery
• Heat exchangers
• Pharmaceutical and textile industries
• Laboratory benches and equipment

CHEMICAL PROPERTIES:

Typical Chemical Composition % (max values, unless noted)
Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N
316	0.08 max	2.0 max	0.75 max	0.045 max	0.03 max	min: 16.0 max: 18.0	min: 2.0 max: 3.0	min: 10.0 max: 14.0	0.10 max
316L	0.03 max	2.0 max	0.75 max	0.045 max	0.03 max	min: 16.0 max: 18.0	min: 2.0 max: 3.0	min: 10.0 max: 14.0	0.10 max

MECHANICAL PROPERTIES:

Typical Room Temperature Mechanical Properties
Grade	Tensile Strength KSI (min.)	Yield Strength 0.2% Offset KSI (min.)	Elongation % in 2ʺ(50.8 mm)	Hardness (Brinell) MAX	Hardness (Rockwell B) MAX
316	75	30	40	217	95
316L	70	25	40	217	95

Our advantages:

As a leading brand of oil pipeline products in China, Holic^® is working on providing high quality 316/316L Stainless Steel Pipes and Tubes with most competitive price.