Q345E Seamless Pipe TPCO

Q345E Seamless Pipe

We are manufacturer Seamless Pipe and providing ABS approved Q345E TPCO seamless pipe with diameter 245mm, 325mm, 450mm for ZPMC.

Q345E pipe is a Chinese GB standard low alloy high strength structural steel made with a hot-rolling process. It is also an alternative to the old steel grades of 12MnV, 14MnNb, 18Nb etc, but they still have some differences in chemical composition and strength.

TPCO refers to Tianjin Pipe Corporation, which is a global known seamless pipe manufacturer in China. Zizi is also steel pipe manufacturer in China, we have cooperated with TPCO many times and we can supply top class TPCO pipes with best price.

Q345E Pipe Specification

Brand: TPCO

Type: Seamless

Size: 245mm, 325mm, 450mm

Material: Q345E Pipe

Inspection: ABS

Options for Dimensions

Diameter: 1/2” to 48”

Thickness: Sch 10S, 40, STD, 80, XS, 100, 120, 140, 160, XXS

Length: Single Random, Double Random, Cut Length Q345E Pipe

Type: Semaless & Welded Pipe

End: PE, BE

Q345E Seamless Pipe

Q345E Steel

Meaning & Designation

“Q” is adopted the first letter of Chinese Pinyin, means Yield Point, “345” is the minimum value of yield strength when the steel thickness ≤16mm. The yield point decreases as the thickness increases.

Q345 Seamless Pipe Chemical Composition

C	Mn	Si	P	S	V
0.2	1-1.6	0.55	0.025	0.025	0.02-0.15

Q345 Seamless Pipe Mechanical Properties

Tensile Strength	Yield Strength	Elongation
470-630	345	22

Q345 Grade Steel

5 quality grades: Q345A, Q345B, Q345C, Q345D, Q345E

Advantages of Q345 Seamless Pipe

Good weldability
Cold & hot workability
Good corrosion resistance
Good performance in structural purpose

Seamless Pipe With ABS Certification

In Factory Inspection

As seamless steel pipe manufacturer, we put a large attention on the quality. Generally speaking, following inspection & tests will be taken for all material seamless steel pipes.

Appearance & marking Check
Dimension Measure
Inspect chemical composition of Q345 Seamless Pipe
Hydrostatic test
Bend test
Flattening test

Third Party Inspection

As a high quality Q345 Seamless Pipe manufacturer, our products can be inspect by third party. The widely known third party inspection agencies are

BV, SGS, LR, DNV, ABS

ABS Certification

ABS means “American Bureau of Shipping” , it development and implement the design, construction and inspection standards for ships and offshore structures.

The factory of Zizi has finalized the qualification process and obtained a mill approval certificate. This means that we can produce ABS grade high-strength quenched and tempered seamless structural pipes, usually used in jack-ups and seajack vessels.

ABS Certificate