JIS G3458 Alloy Steel Pipes

The JIS G3458 standard is formulated for heat-resistant alloy steel pipes used as high-temperature fluid conveying pipes for heaters and boiler tubes.

standard:JIS

Surface :1. Galvanized 2. Black and Color Painting

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introduction

JIS G3458 alloy steel pipes are usually used in applications that require high strength, corrosion resistance and high temperature resistance, such as petroleum, chemical, energy, machinery and other fields. It can meet specific working pressure and temperature conditions and is one of the important materials in the industrial field.
The alloy steel pipes in the JIS G3458 standard include STPA12, STPA20, STPA22 and other models, each of which has its specific chemical composition and mechanical performance requirements.

Data table

Grade	C	Si	Mn	P	S	Cr	Mo
STPA 22	0.15max.	0.50 max.	0.30~0.60	0.035 max.	0.035 max.	0.80~1.25	0.45~0.65
STPA 23	0.15max.	0.50~1.00	0.30~0.60	0.030 max.	0.030 max.	1.00~1.50	0.45~0.65
STPA 25	0.15max.	0.50 max.	0.30~0.60	0.030 max.	0.030 max.	4.00~6.00	0.45~0.65

Mechanical Properties

Grade	Tensile strength	Yield point or proof stress	Elongation %
	kgf/mm2 {N/mm2}	kgf/mm2 {N/mm2}	No. 11 or No.12 test piece	No. 5 test piece	No.4 test piece
	kgf/mm2 {N/mm2}	kgf/mm2 {N/mm2}	Longitudinal	Transverse	Longitudinal	Transverse
STPA 22	42{412}min.	21{206} min.	30 min.	25 min.	24 min.	19 min.
STPA 23	42{412}min.	21{206} min.	30 min.	25 min.	24 min.	19 min.
STPA 25	42{412}min.	21{206} min.	30 min.	25 min.	24 min.	19 min.

company advantage

Why Choose GNEE

GNEE has been in the steel industry for more than 16 years, specializing in seamless steel pipes, oil casing/drill pipes, galvanized steel pipes, stainless steel pipes, ERW/SSAW/LSAW/welded pipes.
We always provide the best service. We will do our best to meet your needs for products. Our products have been sold to many countries and regions in the world, such as South America, Iran, Kenya, Israel, etc., and our export volume reaches 160,000 tons per year.
We strictly implement the ISO 9001,2008 quality assurance system, and will provide all certificates and third-party inspections according to customer requirements, such as MTC, API, ABS, ISO9001, SGS BV, etc.
If any question,please contact with us freely by E-mail or Telephone.

FAQ

Q.Can you provide samples?
A.Of course, we can provide you with free samples, but customers need to pay the shipping cost.
Q.How long is your delivery time?
A.Specifically, need to consider the quantity and specifications of your order.
Q.Do you have quality control?
A.Yes, we have got BV.SGS certification.