Core Scenarios

Ductile iron pipe manufactured in accordance with GBT13295 and ISO 2531 standards, designed for pressurized water and gas transmission pipelines with reliable joint integrity and long service life.

Industrial Parks: In steel plants, chemical plants, and power stations, GB/T13295 ductile iron pipe functions as circulating water pipes for transporting cooling water and process water. Its K9-class wall thickness (6.0–27.9 mm) can withstand the 0.6–1.6 MPa working pressure of industrial circulating water systems, and the outer anti-corrosion coating adapts to the slightly corrosive environment of industrial wastewater. Additionally, as industrial wastewater discharge pipes, GB/T13295 ductile iron pipe's stable material performance prevents pipe leakage caused by wastewater erosion, ensuring compliance with industrial environmental protection discharge standards.

Rural & Agricultural: GB/T13295 ductile iron pipe is suitable for large-scale farmland irrigation main networks, connecting reservoirs, rivers, and wells to farmland. Its long service life (up to 50–100 years) reduces the frequency of pipe replacement in agricultural projects, saving maintenance costs. In rural drinking water safety projects, GB/T13295 ductile iron pipe's non-toxic inner lining ensures the cleanliness of drinking water during transmission, delivering safe and clean water to villages and households, and helping improve rural living water quality.

Special Infrastructure: In urban gas transmission pipelines, GB/T13295 ductile iron pipe is used to transport natural gas and artificial gas from gas stations to residential and commercial areas. Its excellent airtightness and pressure resistance prevent gas leakage, ensuring the safety of gas use for residents and businesses. In ports, docks, and tourist resorts, GB/T13295 ductile iron pipe serves as water supply and drainage pipes-the custom zinc-aluminum coating + polyolefin outer sheath resists salt spray corrosion in port environments, and its customizable outer coating color matches the ecological aesthetics of resorts, avoiding damage to the scenic environment.

T-type interface ductile iron pipe weight and ton pipe laying length.(standard effective length 6 meters)

		K9 Class		C Class
Nominal Diameter DN (mm)	External Diameter DE (mm)	Nominal Wall Thickness e (m)	Nominal Weight (kg)	Pressure Rating	Nominal Wall Thickness e (mm)	Nominal Weight (kg)
80	98	6.0	77	C40	4.4	58
100	118	6.0	95	C40	4.4	71
150	170	6.0	144	C40	4.5	106
200	222	6.3	194	C40	4.7	146
250	274	6.8	255	C40	5.5	210
300	326	7.2	323	C40	6.2	282
350	378	7.7	403	C30	6.3	335
400	429	8.1	482	C30	6.5	394
450	480	8.6	575	C30	6.9	472
500	532	9.0	669	C30	7.5	565
600	635	9.9	882	C30	8.7	783
700	738	10.8	1123	C25	8.8	931
800	842	11.7	1394	C25	9.6	1164
900	945	12.6	1691	C25	10.6	1445
1000	1048	13.5	2017	C25	11.6	1758
1200	1255	15.3	2758	C25	13.6	2480
1400	1462	17.1	3669	C25	15.7	3401
1500	1565	18.0	4147	C25	16.7	3909
1600	1668	18.9	4633	C25	17.7	4406
1800	1875	20.7	5777	C25	19.7	5557
2000	2082	22.5	7001	C25	21.8	5965
2200	2288	24.3	8365	C25	23.8	8288
2400	2495	26.1	9811	C25	25.8	9797
2600	2702	27.9	11392	C25	27.9	11392

Product Features

Long-term corrosion resistance: Internal cement mortar lining and external metallic zinc coating with finishing layer provide proven protection against internal and external corrosion.

Multiple jointing systems: T-type push-on joints for rapid installation, flanged connections for equipment integration, and restrained joints for areas requiring thrust restraint.

High mechanical strength: Ductile iron matrix offers superior tensile strength and elongation compared to gray iron or traditional materials.

Hydraulic efficiency: Cement mortar lining maintains a high Hazen-Williams coefficient (C ≥ 130) over extended service life.

Leak-proof performance: Precision-engineered rubber gaskets ensure joint tightness under pressure fluctuations and ground movement.

Adaptable to installation conditions: Available in standard laying lengths of 6m, customized lengths, and with polyethylene sleeving for aggressive soil environments.

Application

Water transmission mains and distribution networks
Drinking water supply systems
Sewage force mains and gravity sewers
Fire water systems
Irrigation projects
Gas transmission pipelines (low to medium pressure)

Accessories

Push-on joint rubber gaskets with lubrication for field assembly
Restrained joint systems (TYTON, STD, or proprietary designs)
Flanged adapters and dismantling joints for valve connections
Polyethylene encasement sleeves for buried installations with aggressive soil
Internal epoxy or polyurethane lining for higher chemical resistance or ultra-pure water applications
Tapping saddles and branch connections for service line extensions