Sewerage System
Pipes - Durable and Environmental friendly:
1)Standard pipes with flexible joints shall be class K7, class K8, K9 & K12 are also available.
2)Standard pipes with flanges screwed or cast-on shall be class K12.
3)Standard pipes with flanges welded-on shall be class K9.
4)Puddle flanged wall pipes are available in various lengths in the diameter range from 80mm to 2000mm.
Fittings - Full and comprehensive range of fittings are available from DN80~DN2000 for connecting an integral sewer system.
Sewerage System Coatings&Linings
Coatings & Linings--Corrosive protection outside, and chemical and abrasion resistance inside.
| Pipe | Fitting | |
|---|---|---|
| Outside External | 》 Unless otherwise specified by the purchaser, all pipes are coated externally with zinc coating covered by a finishing layer of red-brown color epoxy paint in accordance with EN598. 》 PE sleeves comply with ISO8180 are available |
》 Unless otherwise specified by the purchaser, all fittings are coated externally with zinc coating covered by a finishing layer of red-brown color epoxy paint in accordance with EN598. 》 Fusion Bonded Epoxy. |
| Inside | 》 Unless otherwise specified by the purchaser, all pipes are high alumina cement mortar lined to EN598. 》 Other protective epoxy paint are available upon request. |
》 High alumina cement mortar to EN598. 》 Fusion Bonded Epoxy, 250µm in thickness. |
High Alumina Cement Mortar Lining to EN598
| Nominal size DN | Thickness | Maximum crack width and maximum radial displacement | ||
|---|---|---|---|---|
| Nominal value | Individual minimum value | |||
| 80~300 350~600 700~1200 1400~1600 1800~2000 |
3.5 5 6 9 9 |
2 3 3.5 6 6 |
0.6 0.7 0.8 0.8 0.8 |
|
| 單位：mm | ||||
*Purchaser can consult with us about the best choice of external costings and internal linings to be used.
Sewerage System Strength of Pipe Material
Strength of Pipe Material--Excellent quality for sewer piping system
| Mechanical Properties | ||
|---|---|---|
| Properties | Pipes | Fittings |
| Tensile | 420 N/mm2(Mpa) min | 420 N/mm2(Mpa) min |
| Elongation | DN <= 1000 10% Min DN >= 1100 7% Min |
5% min |
| Hardness | HB 230 max | HB 250 max |
Pressure and Temperature Ratings
a) Works Proof and Leak Tighness Pressures
| DN | Pipes | Fittings |
|---|---|---|
| (Nominal Size) mm | bar | bar |
| 80 ~ 300 350 ~ 600 700 ~ 1200 1400 ~ 2000 2200 ~ 2600 |
50 40 32 25 18 |
25 16 10 10 10 |
b) Allowable operational Pressure
| Type of operation | Internal bar | External pressure bar | |
|---|---|---|---|
| Continuous | Occasional | ||
| Gravity | 0 - 0.5 | 2 | 1 |
| Positive pressure | 6 | 9 | 1 |
| Negative pressure | - 0.5 | - 0.8 | 1 |
c) The nominal pressure rating are applicable to the temperature range - 10℃ to 120℃;the purchasers should be consulted with us where pressure-temperature conditions are out of this range.
Sewerage System Types of Joints
Types of Joint - leak tightness and easy to install.
Flexible Joints
a) "Push in" "T" type (Tyton Joint) are available for pipes & fittings of the range DN80 ~DN2000.
b) "Mechanical""K" type（Bolted-Gland Joint） are available for pipes & fittings of the range DN80~DN 2000.
Note: Standard rubber gaskets for flexible joints comply with BS 2494:1990 "D" type(drainage). ISO 4633 "WG" type.
Flange Joints
a) Dimensional details of flanges designated PN10, PN16, PN25 and PN40 are produced in accordance with EN598 ／ISO2531 are dimensionally compatible with the corrensponding flanges BS4504.
b) PN16 flanges are supplied as standard for pipes and fittings of the range DN80 ~ DN2000.
PN10, PN25 and PN40 flanges are also available upon request.
Angular Deflection & Straight Draw of "Push-in" type flexible Joint (Tyton Joint)
Deflection & Straight Draw of "Push-in" type flexible Joint (Tyton Joint)| DN (Nominal Size) mm | Allowable Angular Deflection | Allowable Straight Draw Without Deflection |
|---|---|---|
| 80 ~ 300 350 ~ 600 700 ~ 800 900 ~ 1200 1400 ~ 1600 1800 ~ 2000 |
5 4 4 4 4 1.5 |
38mm 38mm 56mm 70mm 95mm 105mm |