Q345D is a low alloy steel. Low alloy steel is an alloy steel with a total alloying element content of less than 5%. Compared with carbon steel, low alloy steel intentionally adds one or more types of steel to the steel in order to improve its properties. alloy element. When the amount of alloy added exceeds the normal content of carbon steel produced by normal production methods, the steel is called alloy steel. When the total alloy content is less than 5%, it is called low alloy steel. Ordinary alloy steel is generally less than 3.5%. When the alloy content is between 5-10%, it is called medium alloy steel. When the alloy content is greater than 10%, it is called high alloy steel. Q represents the yield of this material, and the following 345 refers to the yield value of this material, which is around 345. And as the thickness of the material increases, its yield value decreases.

Specification

Detail Date

Specification	Thickness: 1.0mm-20mm
Specification	Outer diameter: 20mm20mm-400mm400mm,1520mm-400600mm
Standard	ASTM A500, BS1387,GB3091,ASTMA53, B36.10, BS EN1029, GB/T9711 etc
Material	Q195, Q235, Q345(B,C,D,E); ASTM A53 GrA,GrB; STKM11,ST37,ST52, 16Mn,etc.
Fabrication	Plain ends, cutting etc
Surface Treatment	1. Galvanized
	2. PVC,black and color painting
	3. Transparent oil,anti-rust oil
	4. According to clients requirement
Package	1. Bundle
	2. Bulk
	3. Plastic bags ,etc
Min order	30 ton, more quantity price will be lower
Payment terms	T/T, L/C at sight, western union etc.
Deliver time	Within 30 days after deposit
Others	We can do special orders as customer’s requests.
	We also can provide all kinds of steel hollow pipes.
	All the production process are made under the ISO9001:2008 strictly

Mechnical property for Q345D low alloy structural steel

Thickness (mm)
Q345D	≤ 16	> 16 ≤ 35	> 35 ≤ 50	>50
Yield strength (≥Mpa)	345	325	295	275
Tensile strength (Mpa)	470-630

Chemical composition for Q345D low alloy structural steel

Main chemical elements composition of Q345D
C	Si	Mn	P	S	V	Nb	Ti	Al (min.)
0.18	0.55	1.00-1.60	0.030	0.030	0.02-0.15	0.015-0.060	0.02-0.20	0.015

FAQ

1. Can you provide samples?
Of course, you can send us the list of products you are interested in and we will arrange it for you as soon as possible.
2. What is your delivery time?
After receiving your payment, we will arrange logistics for you as soon as possible. Generally, the goods will arrive at your designated port within 30 days.
3. What other products do you offer?
As a professional steel pipe supplier, GNEE Group provides you with a variety of steel pipes and steel pipe accessories. The products we provide include alloy seamless steel pipes, alloy welded pipes, ordinary carbon steel seamless pipes, seamless structural steel pipes, ordinary carbon steel welded pipes, etc. You can send us the list of products you need and we will quote you as soon as possible.

Consult our expert technicians today for professional solutions.

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