ERW Carbon Steel Heat-Exchanger and Condenser Tubes

Product Description

TORICH ASTM A214 ERW Carbon Steel Heat-Exchanger and Condenser Tubes

Standard	ASTM A214, A450
Matrial	Q195, Q215, Q235 etc Carbon Steel
Size	OD: 6.76.2mm WT: 1-20mm Length: 1-12m
Manufacture	Tubes are made by electric-resistance welding.
Surface Condition	The finished tubes are free of scale., slight amount of oxidation is not considered as scale
Hardness Requirements	The tubes shall have a hardness number not exceeding 72HRB.
Thermal Treatment:	After welding, all tubes are heat treated at a temperature of 1200℉(650℃) or higher and following by cooling in air or in a cooling chamber of a controlled atmosphere furnace. Cold drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200℉(650℃) or higher
Test and Inspection	- Flattening Test - Flange Test - Reverse Test - Hydrostatic or Nondestructive Electric Test

Tolerance for OD and WT (SA-450/SA-450M)

OD in (mm)	+	-	WT in (mm)	+	-
<1" (25.4)	0.10	0.10	≤1.1/2" (38.1)	20%	0
1"~1.1" (25.4-38.1)	0.15	0.15	≤1.1/2" (38.2)	20%	0
>1.1/2"~<2" (38.1-50.8)	0.20	0.20
2"~<2.1/2" (50.8-63.5)	0.25	0.25
2.1/2"~<3" (63.5-76.2)	0.30	0.30
3"~<4" (76.2-101.6)	0.38	0.38
4"~<7.1/2" (101.6-190.5)	0.38	0.64
>7.1/2"~9" (190.5-228.6)	0.38	1.14

Chemical Requirements

C	0.18
Mn	0.27 to 0.63
P	≤0.035
S	≤0.035

Production Show

1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.

FAQ

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact us

TORICH ASTM A214 ERW Carbon Steel Heat-Exchanger and Condenser Tubes