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1. Question: What is the material used for the DN500 ductile iron pipes listed? Answer: The material used for these DN500 ductile iron pipes is ductile iron. 2. Question: Are the DN500 ductile iron pipes available in different thicknesses? Answer: Yes, the DN500 ductile iron pipes are available in customized thicknesses including 7mm, 8mm, 9mm, and 12mm. 3. Question: What types of processing services are offered for the DN500 ductile iron pipes? Answer: The processing services offered include welding, cutting, decoiling, bending, and punching. 4. Question: What is the shape of the DN500 ductile iron pipes? Answer: The shape of the DN500 ductile iron pipes is round. 5. Question: Do the DN500 ductile iron pipes come with any certifications? Answer: Yes, the DN500 ductile iron pipes come with ISO 2531 certification. 6. Question: What pressure ratings are available for the DN500 ductile iron pipes? Answer: The DN500 ductile iron pipes are available in pressure ratings of PN10 and PN16. 7. Question: Can the DN500 ductile iron pipes be used for water supply applications? Answer: Yes, the DN500 ductile iron pipes are suitable for water supply applications. 8. Question: Are there options for customized support such as OEM for the DN500 ductile iron pipes? Answer: Yes, customized support including OEM, ODM, and OBM is available for the DN500 ductile iron pipes. 9. Question: What are the available sizes for the ductile iron pipes? Answer: The available sizes for the ductile iron pipes include DN450, DN500, DN700, DN1200, and other customized sizes. 10. Question: What is the warranty period for the DN500 ductile iron pipes? Answer: The warranty period for the DN500 ductile iron pipes is 3 years.