SGD(A)SF-1.6/2.5 type steel casing expansion jointDetailed product description：

SGD (A) SF-1.6/2.5 steel casing expansion joint products are widely used in petrochemical, power, steel, pharmaceutical, mining, urban water supply and drainage, sewage treatment and other fields. All safety technical indicators can meet national and relevant technical standards

nominal path DN	minimum L1	Installation length L2	maximum L3	Telescopic device
fifty	one hundred and fifty	one hundred and seventy-five	two hundred	fifty
sixty-five	one hundred and fifty-five	one hundred and eighty	two hundred and five	fifty
eighty	one hundred and fifty-five	one hundred and eighty	two hundred and five	fifty
one hundred	one hundred and seventy	one hundred and ninety-five	two hundred and twenty	fifty
one hundred and twenty-five	one hundred and seventy	one hundred and ninety-five	two hundred and twenty	fifty
one hundred and fifty	one hundred and eighty	two hundred and five	two hundred and thirty	fifty
two hundred	one hundred and eighty	two hundred and five	two hundred and thirty	fifty
two hundred and fifty	one hundred and eighty-five	two hundred and ten	two hundred and thirty-five	fifty
three hundred	two hundred	two hundred and thirty-five	two hundred and thirty-five	seventy
three hundred and fifty	two hundred	two hundred and thirty-five	two hundred and thirty-five	seventy
four hundred	two hundred	two hundred and thirty-five	two hundred and thirty-five	seventy
four hundred and fifty	two hundred and twenty	two hundred and fifty-five	two hundred and fifty-five	seventy
five hundred	two hundred and twenty	two hundred and fifty-five	two hundred and fifty-five	seventy
six hundred	two hundred and thirty-five	two hundred and seventy	two hundred and seventy	seventy
seven hundred	two hundred and thirty-five	two hundred and seventy	two hundred and seventy	seventy
eight hundred	three hundred and fifteen	three hundred and eighty	three hundred and eighty	one hundred and thirty
nine hundred	three hundred and fifteen	three hundred and eighty	three hundred and eighty	one hundred and thirty
one thousand	three hundred and fifteen	three hundred and eighty	three hundred and eighty	one hundred and thirty
one thousand and two hundred	three hundred and thirty-five	four hundred	four hundred	one hundred and thirty
one thousand and four hundred	three hundred and fifty-five	four hundred and twenty	four hundred and twenty	one hundred and thirty
one thousand and six hundred	three hundred and eighty	four hundred and forty-five	four hundred and forty-five	one hundred and thirty
one thousand and eight hundred	three hundred and ninety-five	four hundred and sixty	four hundred and sixty	one hundred and thirty
two thousand	three hundred and ninety-five	four hundred and sixty	four hundred and sixty	one hundred and thirty
two thousand and two hundred	four hundred and fifty	five hundred and fifteen	five hundred and fifteen	one hundred and thirty

Note:
1. The flange connection size shall be in accordance with GB9112-88 or S311
2. Both ends of the pipeline must have fixed supports or brackets, otherwise anti pull bolts should be installed.