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Multi - Rifled Seamless Steel Boiler Tubes

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Payment Type:

L/C,T/T,D/P,Paypal,Money Gram,Western Union

Incoterm:

FOB,CFR,CIF,FCA,CPT

Min. Order:

5 Ton

Transportation:

Ocean,Land,Air

Port:

Shanghai,Ningbo,Foshan

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Product Description

Product Attributes
Supply Ability & Additional Information
Packaging & Delivery

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Overview

Product Attributes

Model No.: GB/T 20409

Brand: TORICH

Type: Welded

Certification: UL

Application: Boiler Pipe

Section Shape: Round

Surface Treatment: Oiled

Usage: Pipeline Transport

Technique: Cold Drawn

Material: Stainless Steel

Length: 4-12M

OD: 4-1200mm

WT: 0.3-200mm

Supply Ability & Additional Information

Packaging: Anti Rust Oil Protection, in seaworthy packing material, in hexagonal bundles or in wooden box

Productivity: 40000 ton per year

Transportation: Ocean,Land,Air

Place of Origin: Zhejiang,China

Supply Ability: 50000 ton per year

Certificate: ISO 9001:2008 ISO 14001:2008 TS 16949

HS Code: 7304191000

Port: Shanghai,Ningbo,Foshan

Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union

Incoterm: FOB,CFR,CIF,FCA,CPT

Packaging & Delivery

Selling Units:: Ton

Package Type:: Anti Rust Oil Protection, in seaworthy packing material, in hexagonal bundles or in wooden box

GB/T 20409 Multi-Rifled Seamless Steel Tubes for High-Pressure Boiler

Spec:
Material:20G , 20MnG , 25MnG , 12CrMoG , 15CrMoG
Size Range:OD:4-1200mm
WT:0.3-200mm
General Length:8-12m
Tolerance:
According to the following tables or customers` request.

Longitudinal mechanical properties of internal screw tubes at room temperature

Number	Grade	tensile strength / MPa(N/)	Lower yield strength /MPa((N/)	Elongation A/%	Impact energy /J
Number	Grade	tensile strength / MPa(N/)	Not less than
1	20G	410~550	245	24	35
2	20MnG	≥415	240	22	35
3	25MnG	≥485	275	20	35
4	12CrMoG	410~560	205	21	35
5	15CrMoG	440~640	235	21	35

The grade and chemical composition of steel

Number	Brand	chemical composition(mass fraction)/ %
Number	Brand	C	Mn	Si	Cr	Mo	S	P
1	20G	0.17~0.23	0.35~0.65	0.17~0.37	--	--	≤0.020	≤0.025
2	20MnG	0.17~0.23	0.70~1.00	0.17~0.37	--	--	≤0.020	≤0.025
3	25MnG	0.22~0.29	0.7~1.00	0.17~0.37	--	--	≤0.020	≤0.025
4	12CrMoG	0.08~0.15	0.40~0.70	0.17~0.37	0.40~0.70	0.40~0.55	≤0.020	≤0.025
5	15CrMoG	0.12~0.18	0.40~0.70	0.17~0.37	0.80~1.10	0.40~0.55	≤0.020	≤0.025
Note1:Residual element content of 20G,20MnG,25MnG should satisfy: Cu≤0.20%,Cr≤0.25%,Ni≤0.25%,V≤0.08%,Mo≤0.15%;The remaining elements of other brands should satisfy: Cu≤0.20%,Ni≤0.30%. Note2:The acid soluble aluminum in 20G steel should not be more than 0.010%. Note3:The nitrogen content of the steel produced by the oxygen converter plus the refining of the furnace should not be more than 0.008%.