Hitech Pipes & Tubes is Leading Stockist & Exporters of Grade 316L Seamless Pipe

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Type 316H is a higher carbon variant of 316 making the steel more suitable for use in applications where elevated temperatures are present. Stabilized Grade 316Ti offers similar qualities. 316 stainless steel contains an addition of molybdenum that gives it improved corrosion resistance. This is particularly apparent for pitting and crevice corrosion in chloride environments.

The increased carbon content delivers a greater tensile and yield strength. The austenitic structure of the material also gives this grade excellent toughness, even down to cryogenic temperatures.

The steel lends itself well for use in the petrochemical, gas and chemical industry. Prosaic Steel supply Grade 316H to a variety of customers including fabricators of pressure vessels, industrial boilers and heat exchangers.

Benefits of using Type 316H Stainless Steel

• Increased carbon content heat resistant qualities
• Greater tensile yield strength
• Greater short and long term creep strength

Initially developed for use in paper mills 316 stainless steel is now typically used in:

• Food processing equipment
• Brewery equipment
• Chemical and petrochemical equipment
• Laboratory benches & equipment
• Coastal architectural panelling
• Coastal balustrading
• Boat fittings
• Chemical transportation containers
• Heat exchangers
• Mining screens
• Nuts and bolts
• Springs
• Medical implants

Background of 316H Stainless Steel Pipes & Tubes
Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments. It has excellent forming and welding characteristics. It is readily brake or roll formed into a variety of parts for applications in the industrial, architectural, and transportation fields. Grade 316 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.

Grade 316L, the low carbon version of 316 and is immune from sensitisation (grain boundary carbide precipitation). Thus it is extensively used in heavy gauge welded components (over about 6mm). Grade 316H, with its higher carbon content has application at elevated temperatures, as does stabilised grade 316Ti.

The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.

316H Stainless Steel Seamless Pipes and Tubes packaging & shipping policy

316H Stainless Steel Seamless Pipes and Tubes is sleeved into plastic bag individually, ten pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.

Composition of 316 Stainless Steel Pipes & Tubes
Table 1. Composition ranges for 316 grade of stainless steels.

Mechanical Properties of 316 Stainless Steel Pipes & Tubes
Table 2. Mechanical properties of 316 grade stainless steels.

Note: 316H also has a requirement for a grain size of ASTM no. 7 or coarser.

Physical Properties of 316 Stainless Steel Pipes & Tubes
Table 3. Typical physical properties for 316 grade stainless steels.

Grade Specification Comparison of 316 Stainless Steel Pipes & Tubes
Table 4. Grade specifications for 316 grade stainless steels.

Note: These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

Excellent in a range of atmospheric environments and many corrosive media - generally more resistant than 304. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60°C. Considered resistant to potable water with up to about 1000mg/L chlorides at ambient temperatures, reducing to about 500mg/L at 60°C.

316 is usually regarded as the standard “marine grade stainless steel”, but it is not resistant to warm sea water. In many marine environments 316 does exhibit surface corrosion, usually visible as brown staining. This is particularly associated with crevices and rough surface finish.

Heat Treatment of 316H Stainless Steel Pipes & Tubes
Solution Treatment (Annealing) - Heat to 1010-1120°C and cool rapidly. These grades cannot be hardened by thermal treatment.

316H Stainless Steel Seamless Pipes and Tubes MACHINABILITY

316 stainless steel has good machinability. Machining can be enhanced using the following rules:

• Cutting edges must be kept sharp. Dull edges cause excess work hardening.
• Cuts should be light but deep enough to prevent work hardening by riding on the surface of the material.
• Chip breakers should be employed to assist in ensuring swarf remains clear of the work
• Low thermal conductivity of austenitic alloys results in heat concentrating at the cutting edges. This means coolants and lubricants are necessary and must be used in large quantities.

316H Stainless Steel Seamless Pipe Sizes Available in Stock with Price
• 1/2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 3/4" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 1" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 1-1/4" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 1-1/2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 2-1/2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 3" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 3-1/2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 4" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 5" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 6" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 8" NB in ThicknessSchedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 10" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 12" NB in ThicknessSchedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 14" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 16" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
• 18" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS

316H Stainless Steel Seamless Tube Sizes in Thickness SWG/BWG Available in Stock with Price
• 1/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 5/16" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 3/8" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 3/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 1" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 1-1/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 1-1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 1-3/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 2-1/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 2-1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 2-3/4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 3" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 3-1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 4" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 4-1/2" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge
• 5" OD in Thickness 10 Gauge, 12 Gauge, 14 Gauge, 16 Gauge, 18 Gauge, 20 Gauge, 22 Gauge

We export 304 Stainless Steel Seamless Pipe and Seamless Tube to Iran, Iraq, Oman, Qatar, Albania, Muscat, Bahrain, Turkey, Egypt, Maldives, Italy, UAE, Bahrain, Indonesia, Australia, Kuwait, Saudi Arabia, South Africa, Germany, UK, Denmark, Canada, USA, Peru, Brazil, Nizeria, Mexico, Venezuela (Latin America), South America, Russia, kazakhstan etc.

 

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