Basic Info.
Model NO.
114mm-3020mm
Temperature Classification
High Temperature Piping
MPa Classfication
High Pressure Piping
Standard
ASTM, GB, API, DIN, JIS
Cross-Section Shape
Round
Connection Type
Welding
Diameter
219mm-3020mm
Medium
Liquid or Gas
Transport Package
Container
Specification
219mm-3020mm
Trademark
KAIWEI
Origin
China
Production Capacity
300000ton
Product Description
The advantages of antiseptic products
1, the most perfect impact resistance, friction resistance, shock resistance and the covering materials is not easy to be damaged when constructing.
2,highly resisting acid ,alkali and salt and good corrosion resistance .
3,electric insulation,highly electrical-shock resistance.
4,low rate of oozing water .
5,long usage-life.
The usages of antiseptic products
1,on-under ground tubing for gas.
2,tubing for oil tubes and oil -storage groove.
3,safe-guard tubes for electric power and communication.
4,all chemical and industrial tubing.
5,tubes for water -transportation.
6,passing-through pushing tubes.
7,other usages.
Steel pipe tolerance:
Steel pipe end:
3 Layer PE Coating Steel Pipe Technical Instructions
Structure of the 3PE coating steel pipe
Three layer PE coating anti-corrosive steel pipe carry out the standard of GB/T23257-2009 and DIN30670.
Structure:inner steel pipe,epoxy powder coating,middle layer of adhesive,outer layer of high density polyethylene
3LPE coating manufacturing process
Production process
Steel pipe inspection→Steel pipe pre-heating→Steel pipe shot-blasting→Anchor pattern depth/Cleanness inspection→Steel pipe medium→frequency heating→Epoxy powder spraying→Adhesive coating→Polyethylene Wrapping-Water cooling to 60ºC below→Online electric spark→Pipe end treatment→Finished product inspection→Product marking→Certification sticking→In storage
Specification of Thickness of Anti-corrosive Coating Layer
| DN of steel pipe (mm) | Epoxy powder (μm) | Adhesive Layer (μm) | Minimum thickness of the coating(mm) | |
| Common Level(G) | Strengthen Level(S) | |||
| DN≤100 | ≥120 | ≥170 | 1.8 | 2.5 |
| 100<DN≤250 | 2.0 | 2.7 | ||
| 250<DN<500 | 2.2 | 2.9 | ||
| 500≤DN<800 | 2.5 | 3.2 | ||
| DN≥800 | 3.0 | 3.7 | ||
Properties of the Epoxy Powder
| NO. | Item | Indexes |
| 1 | Size distribution(%) | 150μm oversize powder≤3.0 250μm oversize powder≤0.2 |
| 2 | Volatiles(%) | ≤0.6 |
| 3 | Density(g/m3) | 1.3-1.5 |
| 4 | Gel time(230ºC)/(S) | 15-30 |
| 5 | Fixed time(230ºC)/(min) | ≤3 |
Properties of Fusion Bonded Epoxy Coating
| NO. | Item | Indexes |
| 1 | Adhesive(grade) | ≤2 |
| 2 | Cathodic disbonding(65ºC,48h)/(mm) | ≤8 |
| 3 | Cathodic disbonding(65ºC,30h)/(mm)) | ≤15 |
| 4 | Counter bending(-20,2.5) | No cracks |
Properties of adhesive
| NO. | Item | indexes |
| 1 | Density (g/m3) | 0.920-0.950 |
| 2 | MFR(190ºC,2.16kg)/(g/10min) | ≥0.7 |
| 3 | Vicat softening point(ºC) | ≥90 |
| 4 | Brittle temperature(ºC) | ≤-50 |
| 5 | Oxidation induction time(OIT) (200ºC)/(min) | ≥10 |
| 6 | Moisture content(%) | ≤0.1 |
| 7 | Tensile strength(MPa) | ≥17 |
| 8 | Elongation at break(%) | ≥600 |
FAQ
Q1:How about thequality?
A:Third party inspections are always welcomed. Like BV, SGS etc.
Q2: How long is the delivery time?
A: Generally about 5-10 days if the goods in stock. Or will be 15-20 days if the goods are not in stock. And also
according to the quantity.
Q3:Do you provide samples? Free or not?
A: Yes, we could offer the sample for free but do not pay the cost of freight.
Q4:May I customize the steel pipe?
A:Sure you can, we can produce according to your requirement, you can send the CAD or
design drawing.
Q5:Any value-added Services?
A:Fottunately for you,we are very experience in this industry. We have equipped our warehouse with the necessities
to perform in-house painting,coating,pipe cutting, etc.
Q6: How about the trade terms?
A: EXW, FOB, CFR, CIF, LC will be accepted.