1. A pipe-shaped integrally molded article, formed by molding a polyphenylene sulfide resin composition, and having, at one or more portions thereof, at least one selected from a different-shape section, a bent section and a different-diameter section, characterized in that a total length L (mm) of the pipe-shaped integrally molded article is 1000 or more, and a ratio (L/D) of the total length L (mm) to an outer diameter D (mm) of the pipe-shaped integrally molded article is 20 or more.
2. The pipe-shaped integrally molded article according to claim 1, wherein a take-off breaking speed V (m/min) of the polyphenylene sulfide resin composition at a state being molten is 20 or more.
3. The pipe-shaped integrally molded article according to claim 1 or 2, wherein a melt tension N (mN) at breakage of the polyphenylene sulfide resin composition is 10 or more and 50 or less.
4. The pipe-shaped integrally molded article according to any of claims 1 to 3, wherein, when a wall thickness of a straight cylinder section extending straightly in the pipe-shaped integrally molded article is referred to as A (mm), and a wall thickness of the different-shape section, the bent section or the different-diameter section is referred to as B (mm), a wall thickness change rate C, which is a rate of change of the wall thickness B to the wall thickness A, is within 15%.
5. The pipe-shaped integrally molded article according to any of claims 1 to 4, wherein the flexural modulus of the polyphenylene sulfide resin compositions is 0.1

6. The pipe-shaped integrally molded article according to any of claims 1 to 5, wherein the polyphenylene sulfide resin composition is a polyphenylene sulfide resin composition compounded with (b) 5 to 100 parts by weight of a polyolefin-based resin and (c) 10 to 45 parts by weight of an inorganic filler relative to (a) 100 parts by weight of a polyphenylene sulfide resin.
7. A method for producing a pipe-shaped integrally molded article characterized in that the pipe-shaped integrally molded article according to any of claims 1 to 6 is molded within a single melt solidification cycle.
8. The method for producing a pipe-shaped integrally molded article according to claim 7, wherein a mold having an opening at each of an upper end and a lower end is used, a molten parison is supplied from the opening at the upper end of the mold, and a blow molding is performed while the inside of the mold is sucked through the opening at the lower end of the mold.