ASME SA213 Grade: T2 / T5 / T11 / T12/ T22 / T23 / T91

ASME SA210 Grade: C / A1

ASME SA209 Grade: T1, T1a, T1b

GB/T 5310 Grade: 20G / 12Cr1MoVG / 15CrMoG

Product Detail | Technical Information | Packaging

Product Detail

Shanghai Metal Corporation is a professional manufacturer and supplier of Multi rifled seamless boil tube products with high quality and reasonable price.

Internally multi-lead rifled steel tubes shall be applied on water wall of power plant boilers, as main component for heat exchange, the rotary movement of water caused by internal spiral ribs can eliminate steam film on tube inner surface and thus achieve nucleate boiling. There are two types of internally ribbed tubes: Multi-lead rifled tube and Optimized multi-lead rifled tube. Multi-lead rifled tubes are grouped into two types, designated Type A and Type B, with 30 degree helix angle, these unique products can improve thermal efficiency by 30%, in comparison to bare tubes.

If you want to know more about price of Multi rifled seamless boil tube products, please feel free to contact us, we will reply you within 24 hours.

Grade: SA213T2, T12, T22, SA210A1, 20G, 25MnG, 15CrMoG, 12Cr1MoVG, 16Mo3
Diameter: 28.6-83mm
Wall thickness: 4.5-13mm
Number of Rib: 4-14
Length: 6m, 8m, 9m, 12m
Produce method: Cold Drawn
Standard: ASME SA-210M-2015, ASME SA-213M-2015, GB/T5310-2008, GB/T20409-2006

1. Higher heat transfer rate at higher steam quality levels.
2. Better heat transfer at lower mass flux levels.
3. Reduction in the mean metal temperature of the tube walls.
4. Ability to increase the heat transfer by optimizing rifle geometry.

Widely used in heat exchangers and boilers for power generation and energy industry. (Subcritical pressure boiler , Supercritical pressure boiler, etc)

1. Ribs are obtained through cold drawing process on a grooved plug. After drawing and ribbing pass, tubes are heat treated to get specified metallurgical requirements.

Before final cutting, tubes are 100% checked by Eddy Current and Ultrasonic test, depending on customer’s requirements.

2. Inspection

• 100% Eddy Current and/or ultra sonic testing according to ASME or EN standards

• Positive material inspection

• Tensile test

• Hardness test

• Specific controls upon request

- Continuous OD checking

- PWHT

- Hot tensile test

- Impact test

- Micro graphic inspection

Name	ASTM A210 Grade C multi-lead rifled seamless steel tube for high-pressure boiler.
Length	6m,12m or as require
OD	28-219mm
Delivery Condition	Annealed, Normalized, Normalized and Tempered
Surface treatment	Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
Application	For high, middle, low pressure boiler and pressure purpose.
Application	Used in heat exchangers and boilers to provide highly energy efficient means of heat transfer. The presence of the internal rifling induces centrifugal forces in the mass flow thereby separating the water from the steam fraction and forcing the water towards the tube wall.
Standard & Grade	ASTM, ASME, A/SA 192, 209, 210 and 213 specifications and all associated grades. EN 10216, DN 17175, BS 3059, JIS 3461 – 3462
Approvals	ISMT is ISO 14001, ISO/TS 16949:2002, and OHSAS 18001 approved. In addition we hold approvals from all major national and International official authorities, customers, and third party certification agencies.

ASTM A210 Grade C Mechanical Properties:
C(Max)	Mn	Si(Min)	P(Max)	S(Max)
0.35	0.29-1.06	0.1	0.035	0.035
ASTM A210 Grade C Chemical composition:
Grade	Tensile Strength(Mpa)	Yield Strength(Mpa)	Elongation (%)
C	≥ 485	≥ 275	≥ 30

1. tubes can be delivered without protection or dry varnished,corrosion inhibitor inside tube, plastic caps at both ends are available

2. bundle tied with metal strip

3. wooden boxes

4. About container load

20ft GP:5898mm(length) x 2352mm(width) x2393mm(high),about 24CBM,23MTS

40ft GP:12032mm(length) x 2352mm(width) x 2393mm(high),about 54CBM,27MTS

40ft HQ:12032mm(length) x 2352mm(width) x 2698mm(high),about 68CBM,27MTS

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Multi Rifled Seamless Boil Tube

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