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About Us
Welcome to Haibao Steel Group. We are the largest corporation in China located in Jiangsu in producing seamless steel tubes for heat exchangers, boilers, superheaters, machinery structures and petroleum industry. We were incorporated by 5 subordinate factories and companies in 1992 upon the approval from the State Metallurgy Council. Each manufacturing workshop is equipped with top machines for producing different products, Experienced employees and modern management is the basis of excellent ...
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Standard: API 5CT
Size: OD4 1/2''- 7 1/2''
Grade: H40, J55, K55, N80, ...
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Standard: API 5D
Size: 2-3/8'', 2 7/8'', 3 1/2'', 4'', 4 1/2'', 5'', 5 ...
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Standard: API 5L
Usage: For conveyance of gas, oil.
Size: 2 3/8''- 5 ...
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Standard: ASTM A192, ASME SA192/ASTM 209, ASME SA209/ASTM A213, ASME ...
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Standard: API 5CT
Size: OD4 1/2''- 7 1/2''
Grade: H40, J55, K55, N80, M65, L80 ...
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Standard: API 5D
Size: 2-3/8'', 2 7/8'', 3 1/2'', 4'', 4 1/2'', 5'', 5 ...
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Standard: API 5L
Usage: For conveyance of gas, oil.
Size: 2 3/8''- 5 ...
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Standard: ASTM A192, ASME SA192/ASTM 209, ASME SA209/ASTM A213, ASME ...
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Company Name:
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