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316L 316 Ss 304 Stainless Steel Welded Pipe Astm A312 A554

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316L 316 Ss 304 Stainless Steel Welded Pipe Astm A312 A554

Certification : ISO9001, CE

Place of Origin : Jiangsu, China

MOQ : 1 pcs

Payment Terms : L/C, T/T

Supply Ability : 5000 Ton/Tons per Month

Delivery Time : 7~10working days

Product name : Stainless Steel Round Pipe

Technique : Cold Rolled,Hot Rolled

Type : Welded Pipe(ERW)

Surface : No.1,2D,2B,BA,No.4,8k,Tempered

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316(1.4401)/316L(1.4404)/316LN(1.4406) SEAMLESS&WELDED PIPE

The main difference between AISI 316 (1.4401) stainless steel and AISI 316L (1.4404) stainless steel is the carbon content. The "L" stands for "low carbon" content.

Due to the lower carbon amount, AISI 316L (1.4404) stainless steel has a reduced risk of sensitization (grain boundary carbide precipitation). Yet, at the same time, it loses some of its strength.

AISI 316LN (1.4406) stainless steel is alloyed with nitrogen to compensate for the loss of strength.

STOCKING PROGRAM

  • Size Range : 1/4″ ~ 36″ NPS (Larger sizes available upon request)
  • Schedules : 10, 10s, 40, 40s, 80, 80s, 120, 160 (Custom wall thicknesses available upon request)
  • Stainless Steel Grades : 304, 304L, 316, 316L, 316L, 317L, 321 , 347
  • Special Alloys : 2205, 254SMo, Monel, Inconel
  • Chrome Moly : P5, P9, P11, P22, P91
  • Standards : ASTM / ASME

CHEMICAL COMPOSITION

Element C Mn Si P S Cr Ni N Fe
316 0.07% 2.0% 1.00% 0.045% 0.03% 16.5~18.5% 10.0~13.0% 0.11% Remainder
316L 0.03% 2.0% 1.00% 0.045% 0.02% 16.5~18.5% 10.0~13.0% 0.11% Remainder
316LN 0.03% 2.0% 1.00% 0.045% 0.015% 16.5~18.5% 10.0~12.5% 0.12~0.22% Remainder

MECHANICAL PROPERTIES

Grade

Tensile Strength

(MPa)

Yield Strength

(MPa)Min

Density

(g/cm3)

Brinell

(HB)Max
316 500~700 200 8 215
316L 520~680 220 8 215
316LN 580~780 205 8 220

ADVANTAGES OF WELDED

  • Welded pipes are typically more cost effective than their seamless equivalents.
  • Welded pipes are usually more readily available than seamless. The longer lead time required for seamless pipes can not only make timing problematic, but it also allows more time for the price of the materials to fluctuate.
  • The wall thickness of welded pipes is generally more consistent than that of seamless pipes.
  • The internal surface of welded tubes can be checked before manufacturing, which isn’t possible with seamless.

ADVANTAGES OF WELDED

  • The main perceived advantage of seamless pipes is that they don’t have a weld seam.
  • Seamless pipes provide peace of mind. Although there should be no issues with the seams of welded pipes supplied by reputable manufacturers, seamless pipes prevent any possibility of a weak seam.
  • Seamless pipes have better ovality or roundness, than welded pipes.

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